Nashville session and stage MVPs craft an aural wonderland with their genre-defying instrumental album, In Stereo.
Working from a shared language of elegance and grit, Nashville guitar domos Tom Bukovac and Guthrie Trapp have crafted In Stereo, an album that celebrates the transcendent power of instrumental musicāits ability to transport listeners and to convey complex emotions without words.
In Stereo also honors Trapp and Bukovacās friendship, which ignited when Trapp and Bukovac met over a decade ago at Nashvilleās 12 South Taproom eatery and clubāan after-hours musicianās hangout at the time. They also sometimes played casually at Bukovacās now-gone used instrument shop, but when theyāre onstage todayāsay at Trappās Monday night residency at Nashvilleās Underdog, or at a special event like Billy Gibbonsā BMI Troubadour Award ceremony last yearātheir chemistry is obvious and combustible.
āGuthrie is very unpredictable, but for some reason our two styles seem to mix well.āāTom Bukovac
āItās like dancing with somebody,ā Bukovac says about their creative partnership. āIt is very easy and complementary. Guthrie is very unpredictable, but for some reason our two styles seem to mix well, although we play very differently.ā
As PepĆ© Le Pew probably said, āVive la diffĆ©rence.ā While theyāre both important figures in Nashvilleās guitar culture as badass, in-demand session and live players, Trapp also points out that the foundation of their respective careers is on opposite swings of that pendulum. Bukovacās reputation was built on his studio work. Besides his touring history, heās played on over 1,200 albums including recordings by the Black Keys, Glen Campbell, Keith Urban, Stevie Nicks, Bob Seger, and Hermanos GutiĆ©rrez. And Trapp considers himself mostly a stage guitarist. He emerged as a member of the Don Kelly Band, which has been a Lower Broadway proving ground for a host of Nashville 6-string hotshots, including Brent Mason, Johnny Hiland, and Redd Volkaert. In recent years, you may have seen him on the road with John Oates. Itās also possible youāve heard Trapp on recordings by Rodney Crowell, Emmylou Harris, and Roseanne Cash, among others.But back to In Stereo. āThis record is truly for the love of music and not giving a shit what anybody else is going to think about it,ā relates Trapp, as he, Bukovac, and I sit and talk, and they noodle unplugged on a Danocaster and an ES-355, respectively, in the warm, instrument-filled surroundings of the Cabin Studio in East Nashville. The album was recorded there and at another studio, simply called the Studio, with Brandon Bell engineering.
āWhen we started working on the album, it was very loose,ā explains Bukovac. āI never wanted to bring in anything that was complete because the key is collaboration. So, I knew better than to come in with a complete song. And Guthrie didnāt do that either. We would just come in with a riff for an idea and then let the other guy finish itāand thatās the best way to do it.ā
āItās got enough humanityāreal playingāmixed with the cinematic side of it.āāTom BukovacAll of which helped make In Stereoās 11 compositions seamless and diverse. The album opens with a minute-long ambient piece called āWhereās the Bluegrass Band,ā which blends acoustic and electric guitars, feedback, and keyboards with generous delay and reverbātelegraphing that listeners should expect the unexpected. Of course, if youāve been following their careers, including their estimable YouTube presence, youāre already expecting that, too. So, a soulful composition like āThe Black Cloud,ā which builds from a Beatles-esque melody to a muscular and emotive power ballad of sorts, comes as no surprise. āDesert Manā is more of a mindblower, with its dark-shaded tones and haunting melodies. āCascade Parkā is an unpredictable journey that begins with delay-drenched piano and leads to Trappās acoustic guitar, which evolves from contemplative melody to feral soloing. And āBad Cat Serenadeā and āTransition Logo Bluesā balance the worlds of country and jazz fusion. Overall, the music is timeless, emotional, and exploratory, creating its own world, much as Ennio Morricone did with his classic film soundtracks.
Tom Bukovac's Gear for In Stereo
Tom Bukovac and his ā58 Les Paul sunburstāone of just a handful of guitars he used to record In Stereo.
Guitars
- 1958 GibsonĀ Les Paul āBurst
- 1962 Stratocaster
- Harmony acoustic rebuilt by James Burkette
- Jeff Senn Strat
Synth
- Roland XP-30
Amp
- Black-panel Fender Princeton
Effects
- Nobels ODR-1
- Strymon Brigadier dBucket Delay
Strings & Picks
- DāAddario NYXLās (.010ā.046)
- Fender Mediums
āItās a lot to ask somebody to sit and listen to an instrumental record,ā Bukovac offers, āso I was just trying to make sureāand I know Guthrie did the sameāit doesnāt get boring. When I finally sat and listened to this thing in its entirety, which was many months after we actually recorded, I had forgotten what weād even done. I was overwhelmed. I love that I never got bored. It moves along and has moments where it gets into sort of a trance, in a good way, but it never stays there too long. Itās got enough humanityāreal playingāmixed with the cinematic side of it.ā
Trapp picks up the thread: āIf youāre in Nashville for a long time and youāre paying attention at all, you understand this is a song town. No matter how you slice it, itās all about the vocal and the lyric and the song. So, it doesnāt matter if youāre making an avant-garde instrumental guitar record. That influence is pounded in your braināhow important it is to trim the fat and get down to the song. A song is a song. It doesn't matter if itās instrumental or not. Itās a āDonāt get bogged down and get to the chorusā kind of thing.ā
āA song is a song. It doesnāt matter if itās instrumental or not. Itās a āDonāt get bogged down and get to the chorusā kind of thing.āāGuthrie Trapp
Which alludes to the sense of movement in all these compositions. āItās very important that every section of a song delivers every transition,ā Bukovac adds. āWhen you go into a new room, when you open that door, itās got to be right. Thatās what I think about records. And thereās a lot of shifting on this record. We go from one field to another, and were very concerned about making sure that each transition delivers.ā
Guthrie Trapp's Gear for In Stereo
Guthrie Trapp recording with his Danocaster Single Cut, made by Nashvilleās Dan Strain.
Guitar
- Dan Strain Danocaster Single Cut
Amps
- Kendrick The Rig 1x12 combo
- Black-panel Fender Princeton
Effects
- Strymon Brigadier dBucket Delay
- Strymon Lex
- Nobels ODR-1
- Xotic RC Booster
- T-Rex Tremster
- Boss TU Tuner
Strings & Picks
- DāAddario NYXLās (.010ā.046)
- Medium celluloid
That kind of thoughtful developmentāthe set up and delivery of various compositional sections in songsāisnāt exactly a lost art, but itās certainly rarer than in earlier decades. Listen to Elton Johnās Goodbye Yellow Brick Road to hear how Davey Johnstone sets up verses, choruses, and bridgesāor anything by David Gilmourāfor reference. Itās also a goal best accomplished with a team of exceptional players, and, of course, Trapp and Bukovac enlisted some of Music Cityās finest. The cast includes steel-guitar legend Paul Franklin, keyboardist Tim Lauer, bassists Steve Mackey and Jacob Lowery, and drummers Jordan Perlson and Lester Estelle.
āDonāt tell my mom, because of course we all want to make a living, but playing music that has integrity is at the top for me.āāGuthrie Trapp
āWe recorded the basicsāreally, most of the tracksālive on the floor,ā says Trapp.
āWe kept a lot of the original throw-down/go-down solos,ā Bukovac adds. āThere were very few fixes and overdubs. One of the best moves we made was letting an outside person objectively sequence it, because you can get a little bit too inside your own thing. Itās like ā¦ if youāve ever done a photo shoot, if you let somebody else choose the photo, itās never going to be the one youād choose, and itās probably a better choice.ā That task fell to bassist and singer Nick Govrik.
The terrain Bukovac and Trapp cover on their first album together is expansive and transportingāand packed with impressive melodies and guitar sounds.
The shipment of In Stereoās vinyl arrived shortly before Trapp, Bukovac, and I talked, and while Bukovac released his first solo album, Plexi Soul, in 2021, and Trapp put out his releases Pick Peace and Life After Dark in 2012 and 2018, respectively, they seemed as excited to listen to it as teenagers in a garage band unveiling their debut single. Thatās because, despite their standing and successes, playing guitar and making music is truly in their blood. What they play is a genuine expression of who they are, ripped from their DNA and presented to the world.
āDonāt tell my mom this, because of course we all want to make a living, but playing music that has integrity is at the top for me,ā says Trapp. āThese days, with AI and people worried or insecure about where the music business is going, and all these Instagram players who just are fixing everything with Pro Tools so they sound like theyāre in a studio, I donāt worry because weāre not selling bullshit. We have 35 years of real experience between us, and when we do social media, weāre just reaching for a cell phone and posting it. Itās organic. That, to me, is a big difference. At the end of the day, I can sleep well knowing that I have earned the respect of the people that I respect the most. Itās just authentic music made for the very reason we got into this in the first place. We love it.ā
YouTube It
Guthrie Trapp and Tom Bukovac practice their live chemistry together at Trappās standing Monday night gig at Nashvilleās guitar-centric Underdog.
You can fine-tune families of instruments by boosting their volume with this handy technique.
Welcome to another Dojo! This month, Iād like to show you the benefits of creating and using VCAs (Voltage Controlled Amplifiers) when mixing, for added control and nuance. Tighten up your belts. The Dojo is now open.
Diving right in, what is a VCA? Think of it as a glorified volume-only control that uses voltage to adjust the amount of a signalās/trackās volume when routed to its output.
Say you want to easily adjust the overall volume of your drum tracks within your mix. Perhaps you have several drum-loop tracks, drum machine soft synths with MIDI sequence tracks, and a full drum kit with multiple mics spread over multiple tracks (you know, a typical session). Or you might want to combine (sum) four individual rhythm-guitar track outputs into one VCA and be able to control the overall volume of all four from one channel. You can create a single VCA channel for all the drum tracks, another VCA for the rhythm-guitar parts, and then assign the outputs of those grouped tracks to their dedicated VCAs. Now, you can globally tweak the overall volume of all your drum tracks and all your rhythm guitars in your mix without changing the routing, plug-in levels, or effects sends, or the panning of any other tracks or groups.
The benefits of using VCAs really emerge after a mix has come together. For example, you might need to make an āall guitars upā version of the mix, or a ādrums down 2 dBā version, etc. You may even want to automate volume rides in certain sections of a songāparticular licks and fills, or even solos. You can also do this with vocals, background vocals, synths, etc.
Following the hypothetical example above, Iām going to show you how to create a VCA within Pro Tools and assign it to tracks of your choosing. Remember, every DAW has its own idiosyncratic way of creating and setting up a VCA channel, so be sure to consult your help section and/or read your instruction manual. Key commands may differ, but the process is essentially the same.
Fig. 1
Fig. 2
First, group (Cmd+G) all the tracks you want to be assigned to a VCA and name that group. Iāve named my group āDRUMSā [Fig.1]. Now, Iām going to create a VCA. Cmd+Shift+N, select VCA, and name it. Iāve named this āDRUMSā as well [Fig.2].
Fig. 3
Notice the new VCA channel and how there are no options for FX inserts, EQ, or panning [Fig. 3]? Thatās exactly what we want, and itās proof that weāve set it up correctly.
Fig. 4
Finally, Iām going to assign my drums into a single VCA by clicking on the āno groupā button and selecting āDRUMSā from the dropdown list [Fig.4]. Thatās it!
Now you can rinse and repeat as many times as you like for as many instrument groups as you like. This is where VCAs really shine and can help you fine-tune specific volume relationships of instruments (and groups therein) within the fluid environment of a mix.
If youāre new to using VCAs, allow me to offer some suggestions that will help you get the most out of employing them. I use VCAs after Iāve shed proverbial blood, sweat, and tears obsessing over all aspects of the mix. Only after I feel like Iāve worked out a solid approach to EQ, compression, effects, parallel processing, outboard gear, aux busses, and all automation do I start using VCAs. On a self-judged scale of 0 to 10, my mix should be hitting about a 9. Then, Iāll typically fold all drum tracks into a single VCA, all bass (synth, stringed, etc.), all electric guitars (minus the solos), all synths and keys, all background vocals, and then group the lead vocal(s) and instrument solo(s) if appropriate. In this case, I have six VCAs to control the entire mix from a high level, and I can automate gain (volume) rides as needed to get that extra bit of focus and excitement out of the mix.
Next month, Iāll be guiding you through how to use aux busses to make your mixes better at an earlier stage.
Blessings and keep rockinā! Namaste.
Modern stomps offer more sounds than ever before, but a laptop can help you delve into an even deeper world of live sonic manipulation. Hereās what you need to know to get started.
The beauty of a great guitar plugged straight into a great tube amp is undeniable. Still, some might say the full potential of an electric guitar is realized only when processing that signal. Of course, some of the most groundbreaking players of all timeāfrom Jimi Hendrix to The Edgeāhave illustrated this point, and the current deluge of new pedals and thriving builders seems to bear this out.
If you are into processing, pedals might be plenty for you, especially in this era of stompboxes that do things even top studio gear couldnāt manage a decade ago. Still, there is a portal to another world of sound available for live useāa world explored by guitarists like Adrian Belew, John McLaughlin, Eivind Aarset, Fennesz, Dan Phelps, the late Andy Gill, and others. Itās a portal you may be looking at as you read this. I am talking about a laptop computer.
I was introduced to the concept of guitar and laptop performance through the series of Warper partiesā gatherings dedicated to computer-based musicāI attended in New York City. At the very first one, I encountered a guitarist with a computer built into his guitar and another playing jazz fusion through his laptop to backing tracks, also on computer. Yet a third player was performing arrangements of TV themes, playing guitar with one hand and keyboards with the otherāall through a laptop.
Plug-ins offer sonic shaping and effect routing that is difficult or impossible to achieve with pedals. Even if you could, it would require a pedalboard the size of the entire stage and a router/switching system of NASA-level complexity.
For me, performing solo with a laptop let me privilege the kind of sonic fairy dust I had been offering as a side musician, shifting the lush pads and textures I had delivered to singer/songwriters for years out from the background and into the focus of attention. Plus, as someone who does not sing or play typical solo guitar, playing through a laptop let me take control of my performance opportunities: no pesky bandmate schedules to consider for rehearsal or booking.
Many guitarists already use a laptop to record everything from demos to final releases. These days, all it takes is a guitar, an audio interface, a DAW (Digital Audio Workstation), and a pair of speakers or even good headphones, and you are ready to make your next masterpiece. If you have worked this way, you have likely discovered plug-ins. Instantiated in a DAW, plug-ins offer sonic shaping and effect routing that is difficult or impossible to achieve with pedals. Even if you could, it would require a pedalboard the size of the entire stage and a router/switching system of NASA-level complexity. Multi-effects units might get you part of the way there but as yet cannot offer the range of potential sounds available with a computer.
With a wealth of creative software, a laptop lets you easily take lush reverbs and mangle them with filters or distortion. You can sequence effects to automatically appear and disappear over the course of a song or composition. If that sounds interesting, you might want to consider transporting your laptop, DAW, and plug-ins to the stage, either as your sole processing system or in conjunction with pedals. Hereās what youāll need to get started.
Hardware
A MIDI controller, like the Novation Launch Control ($159 street) seen here, isnāt necessary to use Ableton Live, but using one increases interactive functionality.
Because live performance has different requirements than recording, ultra-high audio specs are not quite as important, but portability, reliability, build quality, and low latency are crucial. Latency is the time it takes for your signal to go into the audio interface, pass through the software on the laptop, go back into the interface, and travel out to the speakers, as measured in milliseconds. You will want the latency low enough that you donāt hear the sound reaching your ears noticeably after you hear/feel your pick hit the strings. Ideally, you will want the most powerful laptop you can afford in order to have access to the fastest processor possible. Plenty of RAM and a solid-state drive will contribute to the computerās speed.
There are factors that affect latency. One is buffer size, delineated in samples. Without getting too technical, the lower you can set the buffer in your DAW, the less latency you will hear. How low you can set it, without getting dropouts and other unwanted glitches, is determined by the number of plug-ins you are running and the power of your computer. With virtually any of the current Apple M1 powered laptops you should be good to go. If you canāt afford a new computer, donāt worry. I was performing with a MacBook Pro over a decade ago with no problems. You can attempt this with a non-Apple computer, but virtually every major touring act uses Macs thanks to their reputation for reliability.
Here I have the buffer size set to 128, where I find I can record tracks without latency issues. With modern computer power and minimal plug-ins, you can probably set this even lower.
To plug your guitar into your computer, you will need an interface, which converts your signal from analog to digital. There are many available options, including the Universal Audio Arrow (available used for $350-$399) or Focusrite Scarlett ($179 street). You only need one input, unless you use both electric and acoustic guitars, which have different input requirements. The number of outputs will depend on your signal chain.
A MIDI controller of some sortāfoot switcher, tabletop controller, or bothāis a good idea because, as with pedals, you will want to turn effects on and off and have access to parameters. Akai, Korg, and others make a variety of tabletop controllers, ranging from $119 street and up, with knobs and switches that will let you turn on, blend, and manipulate the parameters of the plug-ins in your DAW.
Eivind Aarset is among the group of creative guitarists who bring a laptop into the mix for all gigs.
Photo by soukizy.com
You might be thinking, āArenāt my hands otherwise occupied playing my guitar?ā Thatās true, but one of the advantages of laptop guitar is advanced looping. Once a loop is created, a tabletop controller lets you easily route that loop through myriad effectsāfilters, resonators, delays, reverbsāin ways that are impossible with hardware loopers. A footswitch-style MIDI controller is helpful if you want to do syncād rhythmic loops, though itās not as necessary for ambient looping.
Software
To process your guitar in the computer, you can use any software that hosts plug-ins: Logic, Pro Tools, GarageBand, Logic MainStage, and others. As a performing tool, Ableton Live (starting at $99 street for an introductory version) is the most ideal and offers a number of unique features. With Ableton, you can tap in tempo, easily syncing all your effects and loops at once, and there are ānudgeā buttons that let you move the tempo of loops slightly up or down to match a drummerās shifting time without changing their pitch. The ālinkā feature lets you wirelessly sync your effects with your keyboard playerās laptop, your drummerās loops, and even the computer running the showās backing tracks and light show.
This is my performance setup in Ableton Live. It includes the Jam Origin MIDI Guitar plug-in ($149 street) that lets me control spoken-word recordings in a sampler without any kind of MIDI pickup on my guitar. Also shown is a great granular processing plugin, Stream, from Delta Sound Labs ($49 street).
Liveās native plug-ins will let you create a custom amp-modeling system; emulate digital, analog, and tape delays; and add stutter, granular, or bit-crushing effects. Plus, if you are performing solo using backing tracks and running through a PA, you can easily set a dedicated track to resampling and it will record your entire eveningās performance.
Live lets you loop in two different ways via the looper plug-in and āclipā system. The looper plug-in is great for overdubbing ambient soundscapes, but can also provide timed rhythmic parts, while the clip system is perfect for making multiple rhythmic-based loops that can then be triggered by a MIDI footswitch and/or tabletop controller. While you canāt overdub on a clip, you can set up multiple clip loop tracks where you are able to, for example, record all your verse parts in one row, your chorus parts in a second row just below, and create a third row for the bridge. You can then trigger these rows as scenes.
Here is a dummy clip set to raise and lower the feedback of the Ableton echo plug-in.
Live also lets you make ādummyā clips with no audio that can be set to modify effects parameters over time. For example, you could set a dummy clip to increase a delay plug-inās feedback to just under runaway levels while simultaneously shortening the delay over a period of two bars, and then reverse the process over the next two bars. Try that with pedals!
Would you like to hear two great examples of guitarists using Ableton Live onstage? Check out any video with Eivind Aarset performing. Aarset uses it for a variety of sounds, including ambient reverbs and delays and looping. John Scofield collaborator Avi Bortnick also uses Live for myriad sounds and textures, one of which includes using his guitar to open a noise gate that lets rap vocals cut through only when he plays.
Signal Path
Fig. 1 (*Magenta cables indicate additional or alternative signal path.)
There are multiple ways to insert a laptop into your signal chain. You can run everything through your computer, employing amp modeling softwareālike Bias FX 2 ($49 street), Guitar Rig ($199 street), or AmpliTube ($99 street)āand running the signal from your audio interface to the house PA or a pair of powered monitors (Fig. 1).
Fig. 2
You might instead eschew the amp modeling software and run the signal into a pair of guitar amplifiers (Fig. 2). This offers a way to keep your favorite tube amps as part of your rig. But be careful: Some effects plug-ins can put out low frequencies that donāt work well with guitar amps and speakers.
For both of those methods, all you need is an interface with one input and two outputs. You run your guitar signal into the interface, which converts your analog signal to digital, and then sends that digital info through USB, Lightning, or Thunderbolt cables into the laptop and the software. Next, a stereo digital signal is sent back to the interface, where it is converted to stereo analog and sent out to the amps, powered speakers, or PA using standard guitar cables or XLR-style microphone cables.
Fig. 3
A more complicated method is a version of the wet-dry-wet setup. Here you would split your guitar signal between a mono signal going directly into a guitar amplifier and the laptopās stereo output to two full-range powered speakers or the PA. This setup can be achieved in a few ways. You can use an interface with one input and three or more outputs that can be routed inside the interface. This allows you to send your guitar signal from the interface simultaneously to the laptop and directly to a guitar amplifier (Fig. 3).
Fig. 4
Alternately, you could use a splitter box before the audio interface that sends one signal to your interface and computer, and one to the amp (Fig. 4).
Fig. 5
If you donāt want to use modeling software in the computer for the wet signal, you can use a reactive load box, like the Universal Audio OX ($1,499 street) or Fryetteās Power Station ($899 street) or Power Load ($699 street), which gets placed between your amplifier and its speaker (Fig. 5). You run your guitar into the amp, and two outputs on the load box simultaneously send your amp signal to the speaker and, with speaker emulation, to the computer interface. Sending the sound of your amplifier to the DAW means there is no need for amp modeling within the computer. Once the sound is processed, it is sent to powered speakers or the PA, as in Fig. 2. In this method, your amplifier signal can remain dry and present, while processed sounds will emanate from the powered speakers or PA.
If you donāt want your amplifier signal completely dry or just want to place some of your effects pre-computer, you may want to use pedals in front of your amp. Which brings us to.ā¦
Pedals and Laptop
As much as a computer can do, there are plenty of good reasons to combine pedals with laptop sounds. Digital modeling software sounds excellent these days, but adding a mild overdrive pedal before your interface can lend some analog warmth to the sound. In addition, a drive pedal set for just a little breakup can make the playing experience feel more organic. As you play harder and softer, the āgiveā of the pedal can often feel more expressive than even the best amp modeling software.
Plus, just as many plug-ins are not yet duplicated in pedal form, likewise there are pedals that perform functions not available as plug-ins. Glitchy, digital micro-looping pedals like the Red Panda Tensor, Hologram Electronics Dream Sequence, Chase Blissā Blooper and Mood, and the Hexe FX Revolver do not yet have any direct analogs in the plug-in world. If you want to learn a programming language like Max MSP, you might be able create something like these pedals inside your computer. Ableton includes Max for Live with the purchase of their suite and a plethora of pre-programmed plug-ins are available using Max as their basis, but these pedals still offer something special.
Taking the Stage
You now have all your hardware and software and are ready to perform. Depending on how you use the laptop in your signal chain, you might be able to place it out of the way and use a foot switcher, as if you were using a standard multi-effects unit. But if you want to maximize the advantages of using a computer live, you will likely want it at hand.
In almost two decades of performing with this setup, I have had fewer computer crashes than pedal malfunctions.
You can normally rely on the venue to provide a table of some sort, or you could try Eivind Aarsetās solution. He brings a keyboard stand and places his guitarās hard case on it, creating a perfect platform for controller, computer, interface, and some of his hardware pedals. I havenāt used a hard case in years, so I just screwed some handles onto a painted piece of plywood and place that on a keyboard stand.
As with any performance, hearing yourself is crucial. If you are using guitar amps or powered speakers, they will act as monitors. Some powered speakers may have XLR outs to send to the house PA. If you are only running through the PA, you may want to use headphones plugged into your interface to be assured of hearing the same thing as the audience.
Some guitarists have trepidation about reliability when using a laptop. All I can say is that in almost two decades of performing with this setup I have had fewer computer crashes than pedal malfunctions. It is also easier to bring a backup laptop and interface than a second pedalboard and amp.
A laptop dedicated to only music is ideal, but if you donāt have that luxury, make sure to quit any programs other than the performing software in use. Turning off WiFi during your set will prevent notifications from interrupting and provide a little extra processing power. And speaking of power, while it is best to keep your laptop plugged in while performing, if there is ever an issue with clean power or a faulty socket, unlike with pedals, your laptop battery will take over and the show will go on.
Is It for You?
Playing through a laptop is not for everyone. You probably wonāt be welcome at your local blues jam if you say, āHang on a minute while I boot up my Mac.ā But if your music involves a world of sounds that go well beyond those offered by hardware pedals and multi-effects, or youāre just seeking a more portable way of producing interesting tones, taking the stage with a computer might be an option. And, with tubes becoming harder to get, who knows? Someday it may be the best option.