The Alfred Jazz EASY Play-Along Series goes beyond the other play-alongs. Each volume has parts for C, Bb, Eb and bass clef instruments and includes a sample jazz solo written-out for you to listen to, play and practice. The included CD has two tracks for each tune; demo and play-along track. The demo track , featuring a pro rhythm section and horn player, is a learning tool for the melodic concept, overall jazz style and the sample jazz solo. The play-along track allows a soloist or group to learn and perform with the rhythm section. Specific improvisation tips and suggestions are included. Check out the sample jazz solo, it?s an invaluable asset that makes learning how to improvise easier. There is also a matching book for rhythm section featuring piano, bass and drum parts. Nine great tunes=great jazz!