Although I didn't have a hand in creating the following, you might want to check them out. The more different sorts of jam tracks you play with, the better-equipped you'll be when you finally venture onto jam session stages:
Here's an amazing instructional book called Blues Saxophone. It surveys ALL of the top blues sax players; the author not only transcribes a classic solo by each player (including Eddie Shaw, A.C. Reed, Stanley Turrentine, and Willis "Gatortail" Jackson") but plays it for you on the accompanying CD.
If you're interested in the JAZZ side of blues, you may want to purchase a set of jam tracks I recently discovered at PlayJazzNow.com. They consist of piano, bass, and drums in a relaxed, straight-ahead jazz groove:
SET #3: BASIC JAZZ BLUES INTERMEDIATE level. Medium swing tempo (mm= 120)
12 tracks, one in each key. Each track is about 4 minutes long. Price: $12
If your ambitions include transforming yourself into a full-fledged jazz harp player, you'll probably want to visit the PlayJazzNow site and poke around, since they've got lots of other jam track downloads. Click the link below; it'll take you to the horn player's page. (You'll also be able to find a free preview of the "basic jazz blues" jam tracks above):
