Here's the background. I'm a geezer who played guitar and bass when I was a kid. I went to the Robin Trower school of the endless solo. Beck, Hendrix, blues rock, fast fingers, all that. Sold my Sunburst '66 Strat and my little Hagstrom bass, which I used when I filled in a little jazz group when I was a teen (my (now) brother in law hogged the guitar parts), back in the early 80's. About a year ago I got back into playing. Then, I remembered how much I missed the Deep End of the Pool and bought a fretless Jazz. Haven't picked up my guitar since. So here's the question. Any advice for a blues/rock guitar player trying to be a jazz bassist? When I played with those older guys all those years ago I was just thumping along with blues and pentatonic scales and a few arppegios - not really knowing what I was doing. I first learned guitar the usual way, strumming chords along with the singing and that's how I always found my way around a tune. Now, I get lost. I think I have a pretty good sense of time, but I lose track of where I am. Especially playing a repetative line many times.