A collection of studies composed for musicians who wish to extend themselves in improvisation, composition, sight reading and general musicianship skills. Each etude has a theoretical explanation, suggestions for performance and tips for practice routines. Two CDs of combo accompaniments performed by members of the Yellowjackets are included. The first of the two CD's has the complete mix for listening, The second CD is a playalong with the same mix minus the sax leadmelody/solo. It is a great listening learning experience featuring Bob Mintzer on sax, Jimmy Haslip on Bass, Russel Ferrante on Keyboards and William Kennedy on Drums.