Cutting The Changes: Jazz Improvisation Via Key Centers – E Flat Edition for all E flat instruments written by N. The format of this sheet music is instructional book (leadsheet notation), CD-ROM (Windows and Mac) and accompaniment CD and it’s published by Neil A. Kjos Music Company. Cutting The Changes: Jazz Improvisation Via Key Centers – E Flat Edition is part of the following sheet music categories: Play Along, Instructional, Improvisation and Jazz.