yamaha billy sheehan signature attitude 3 electric bass guitar black yamaha billy sheehan signature attitude 3 electric bass guitar black. tthe yamaha billy sheehan signature attitude 3 electric bass guitar features billy's sound taken to a new level, with refined characteristics. attitude's low-end is powerful and bold, yet tight and controlled. the highs are clear and musical and the mid drives with a power rarely heard. the latest technology, including our spline jointed body and exclusive are and ira wood treatments together with newly designed pickups and a totally reworked neck joint make this bass something else. and with billy's involvement every step of the way, playability is like no other guitar. it's clearly an attitude, but it's an attitude like you've never heard it before. case sold separately.