Jamey Aebersold, Legendary Jazz Educator, 8x10 - Easy Digital Download!

From Wiki: Jamey Aebersold is an American publisher, educator, and jazz saxophonist. His Play-A-Long series of instructional books and CDs, using the chord-scale system, the first of which was released in 1967, are an internationally renowned resource for jazz education. His summer workshops have educated students of all ages (including me) since the 1960s.