I play bass guitar in my school's jazz band. We went to the Maritime Musicfest in Glace Bay, Canada recently and we did a kick-ass job. We have a great rythm section . We got everybody groovin' with Channel One Suite by Buddy Rich and his gang. At the end of our performance, the ajudicator come up on stage and said that I was holding the bass wrong. I looked at him kind of funny. He said that my thumb on my neck hand was positionned improperly. I had it kinda' pointing up the neck like most rock bass players do. He said that I needed to place the pad of my thumb on the back of the neck. He said upright bass players do it so they have a better arch in the fingers and they are able to move up and down the neck more easily. You will find that this is true. However, my bass guitar is very different than an upright. It doesn't have that big, chunky neck. It's even way slimmer than the old p-bass necks. It might even be a bit slimmer than the fender jazz. When the thumb is placed on the back of the neck, the fingers arch but it is a hassle and causes strain to find a way to get them back down to that distanced fretboard. As for the up-and-down-the-neck-thing, I hardly ever go beyond fret #5 on the bottom three strings (when I say bottom, I mean low notes). On the top string I sometimes have to sprawl up the neck a bit to hit those D's and E's or maybe the odd F. So there's the scoop. I want lots of feedback--especially from you upright players. Opinions, facts, anything!