I've been playing bass about five years, but I've been playing jazz for 40 years on saxophone. I recently had the experience of a jam session on bass where someone wanted to play "So What" and I had to demur because I couldn't play the standard bass line for the introduction. (I know how the bass line goes, I could sing it to you all day long, but I need some shedding time to be able to physically play it.) My question is, aside from that one, what would be the short list of exposed characteristic bass lines that are really essential to know, when playing tunes from the standard jazz canon? Night in Tunisia is one other that occurs to me, but I would like some input from the experienced players here, so I can go to the shed with a plan.