Oxford University Press
Kellie Santin - Creative Saxophone Workbook
Techniques for intermediate saxophonists & jazz improvisers
Easy to Moderately difficult
Includes two CDs (one for Eb, the other Bb)
Code No. 9780193223691

This is the next book to use after the Creative Saxophone method, because it builds on from the fundamental playing techniques introduced in it and takes you to the next stages.
The example tracks and tunes are modern and aren't just swing - you've got rock, fusion, blues and pop happening here too.

Specific exercises strengthen your chops and fingers in no time - learn when to use the 4 different ways of playing Bb, get the 12 harmonic minor scales down. Get those sounds down over all 12 keys with the several progression tracks recorded on the CDs.

In no time you'll be thinking and hearing in different keys, playing along with the Cycle of Fifths tracks recorded on the CDs and playing through the ii-V-Is.

There are four transcription exercises for you to have a go at too. 

** Please note - the Bb CD (green) has demos performed by alto saxophone and are in the alto key. However the playalong tracks on the Bb CD are in the correct key for Bb saxophones. 

Creative Saxophone Improvising
Creative Saxophone Workbook
Creative Saxophone for Beginner