wanted to start a thread for sharing backing tracks, was thinking about how I used to practice with Jamey Abersold and I found this site - http://www.legalsounds.com/download-mp3/...ld/artist_89361
Not sure how to get the charts but if you have a real book that will help, I have never bought anything from this site and I'm not affiliated in any way - it has a preview feature so you can get a sample of the tracks.
vol 3 - II-V7-I progressions helped me alot
http://www.legalsounds.com/download-mp3/...on/album_167468
there are some decent blues jams for those harmonic minors etc
http://www.legalsounds.com/download-mp3/...ys/album_167481
vol 26 scale syllabus is pretty cool the link is wierd though and won't work when I post it