Likely the first melodic device any improvising musician learns is the pentatonic scale. It’s a simple pattern to learn on guitar, it’s easy to play, and it always sounds “correct.” It contains mostly the “good” notes and usually you don’t need to think too much about which notes to avoid. What’s not to love? After a while, however, a certain sameness begins to emerge, and one begins to wonder, “Is there something more here?” Well, it has much more to offer than what you see on the surface.