Alfred MasterTracks is an exciting play-along package featuring a hot rhythm section of today's top studio musicians. Each of the four book and CD packages contains 12 extended tracks in a wide range of up-to-date grooves, styles and keys complete with charts indicating the harmonic and rhythmic structure. Perfect for school or individual use, Alfred MasterTracks is a great way for improvisers of all levels to fine-tune their craft while playing along with an awesome rhythm section! Sound Clip 1 Sound Clip 2