"Blues & Rhythm Changes in All Keys" - This book is designed for intermediate to advanced jazz improvisers. The "Improv Etudes" aid to keep you sharp on two of the most powerful chord progressions that is present in at least 90% of all jazz standards. Included in this 70-page ebook/book: * Notes on Blues * Blues in All Keys, 2 Choruses each with an extra 2 blank choruses to write your own Improv Etude * Notes on Rhythm Changes * Rhythm Changes in All Keys, 2 Choruses each with an extra 2 blank choruses to write your own Improv Etude