Read this in one of the interviews on Bob Babbit's site (in the Articles section) "By watching Jamerson, I saw certain things that he did that would tell me how he would play other lines. We both came from upright bass. And, the difference between upright bass and electric bass is that on the upright bass, you don't use the third finger on your left hand until your one octive up. Whereas on a guitar or electric bass, you're using one, two, three, and, four. So that explains a lot of things about his bass playing and how he went about doing certain things." I've never played upright, so maybe someone could explain this to me? I love Jamerson's bass playing so understanding how he did is really interesting to me.