I have just started working on learning some Pearl Django songs to play with a guitar player. I have been playing guitar for 30 years and recently have switched over to playing bass guitar (3 years into it). I have always played by ear and do not read music or know how to play bass with chord charts. I play in a couple of groups right now, Santana Tribute band and a country rock band. I grew up listening to my father play upright with his friends when they would get together playing Country Swing. It's in my blood and I need to explore the walking bass. At this point I feel I won't be able to learn songs by ear anymore and will have to understand the rules or methods for the changing chords. I can hear them and I can duplicate them but I don't think I will be able to remember quite as many songs as I have done by ear with the rock and latin songs I am doing. I want to be able to play bass for a trio or quartet and if the first 4-10 songs work with the guitarist I will most likely rent or borrow an upright to fit the acoustic image.
I guess I'll get to my point. I need help with advice on books to put me in the right direction. I am looking for something that has practice lessons to develope the walking bass for Swing Music. Any help, Ideas or comments would be appreciated.