I had a chance to catch Mose Allison and his quartet at the Iridium last night. To my surprise, the bassist was Ratso Harris, a player who was featured several years back in Bass Player mag. Ratso does a lot of tapping, sometimes using his chin as a capo, of sorts, to free his left hand to do rhythmic tapping with both hands. While this isn't my personal favorite way to see/hear a bass played, he accomplished what he set out to do. The surprise to me was his custom made 6 string URB with about four different pickups installed. This was scary, to say the least! It's one thing to see/hear on slab but this caught me by surprise. Does anyone know of other 6 stringers?