These are professional quality Mp3 rhythm section tracks to use at your gigs or just for practicing. Each title includes two separate tracks, one with bass and drums for comping and the second track with bass, drums and piano for soloing. The tracks are perfect for performances because they are very tastefully balanced and not overplayed, to create a background to enhance your performance. Each track is about 5 minutes long and digitally created. (Some by bassist Todd Johnson.) Load them onto your Mp3 player and take your rhythm section to a gig.