Talking old school standards, the tunes that live in Real Books, not contemporary/smooth/funk/fusion. With charts, along with the knowledge of how to play walking bass lines, one can mostly navigate a lot of swing tunes effectively without playing anything specifically tracked on original recordings (not that such would not be cool, useful, etc. - but that's not where I'm going with this). And for a lot of Latin stuff, the classic root-five moves* associated with said genre in a general sense often work well with sambas and bossas. I hope it is obvious that I am grossly oversimplifying here. What I'm asking about here are bass lines in the old standards that are like signature parts, hooks - in other words, if they're played differently, or improvised (regardless of how well), it's not quite the ticket. Off the top of my head, "All Blues" and "So What" from Miles Davis come to mind. Also, "Song For My Father"* by Horace Silver, from which Becker & Fagen borrowed the line for their piano figure in the opening of "Rikki Don't Lose That Number". And what else? * The Horace Silver bass figure with some tweaks is not far off from a reasonably effective generic treatment for some Latin tunes. Also, are there any standards that feature a signature bass line during the head, which stick with this line throughout solo sections, as opposed to typical treatments such as going to a swing/walking feel during improv sections, and then returning to the signature part at the end, for the head? Do any signature bass lines come to mind for ballads?