My guitar sits is right in the middle of my stomach, so theirs little difference in standing or sitting. Works nice cause I spend just as much time sitting as standing anymore. I tried lowering my guitar down, but it makes it nearly impossible to play complex chord shapes and I like to do that. That tab wasn't much of a riff but thanx, it's just the A major scale. Just a different version of playing it. The trick is it's a very fluid way to get to that high-e 12th fret from the open A, or if your going from one position to another position. Just a trick though.