• Backing track - jazz standards (NOTE: don’t mind that these BT Jukebokses are on a site in Norwegian, for the time being.)
  • Swing
  • Ballads
  • Latin jazz

• GuitarBT.
• GuitarBackingTracks.com
• Free Jam Backing Tracks

• Hal Leonard Jazz Play Along Series (Listen to the sample tracks!)
• Aebersold Play-A-Longs

A good advice before you buy would be to listen to the sample tracks from the Hal Leonard and Aebersold playalong and compare them.

• Let’s Jam! Jazz & Blues Jam Tracks - Peter Vogls BTs from his Watch & Learn site.
• Ameritz - may have what you are looking for if you can’t find it elsewhere.
• jazzbacks.com - not the same quality as the Hal Lenoard and Aebersold playalongs.

• JAM Free accompaniment software. See onsite article on JAM!
• Band-In-A-Box (a.k.a. BiaB)
  • 500+ BIAB songs from the Real Book here http://phillipsmusic.net/realbook.htm
  • http://www.midistudio.com/BIAB/List.htm
• Ableton Live
• Cubase
  • Groove Agent
  • Virtual Guitarist
  • Broomstick Bass
• Line6 Riff Tracker - loop-based recording software.

• Boss Loop Station

Bireli Lagrene and Sylvain Luc’s version of Isn’t she lovely:
Here’s a demo on how you can use a loop station. Jazz guitarist Victor Saumarez using a loop station to crate a funky jazz groove: