Porter muses over the highlights of his vast collection used on records by everyone from B.B. King to Eric Clapton to the Smiths.

"The back and sides of this acoustic guitar are also koa wood, decorated with special abalone highlights. Martin made two of these special for Norm's Vintage Guitars, and this is the second one. I tried them both and I could've had number one, but I liked number two the best." The instrument was used on Ryan Adam's Love Is Hell. Keb Mo, who used the guitar on his album Suitcase, liked the 45-K so much he later had Martin create a Keb Mo model based on Porter's."