Practice with Bach - Vol.1 (Tenor Trombone) Ralph Sauers landmark new work, Practice With Bach, will challenge your technique and musicality with demanding new études. Based on the keyboard works of J. S. Bach, each of the Three Volumes is available in five different versions--Alto Trombone, Tenor Trombone, Bass Trombone, Euphonium, and Tuba. Each version is customized for the individual instrument (choice of key, range, ornaments, etc.). Tenor trombonists will find that the Alto version is excellent for high register practice and alto clef reading. Likewise, Tenor trombonists can use the Bass version for low register work. Bass trombonists will find excellent material in the Tenor version for work in the upper register and tenor clef reading. The Euphonium version is in the same key as the Tenor version, but all in bass clef, with many more trills added. The Tuba version is in the same key as the Bass version, also with more trills. Volume One contains Twenty-four études in all keys, based upon preludes from The Well-Tempered Clavier.