The II-V-I Progression: 80 Patterns from the Masters of the Saxophone by David Detweiler features a practical analysis of improvisations on the most important chord progression in jazz. This book/MP3 set includes 80 licks by the masters of the tenor saxophone: Hank Mobley, John Coltrane, Dexter Gordon, and Sonny Rollins. Additional original etudes by David Detweiler, based on popular standards provide a fun way to apply and practice the patterns with a swinging rhythm section. The free downloadable material includes the play-along tracks, patterns in all keys, and the etudes transposed for alto saxophone (voucher code in book).