12 Studies sheet music. Arrangement for Viola, Guitar and Piano. By Peter Racine Fricker, Fernando Sor, Edward MacDowell and Franz Anton Hoffmeister
By Bill Hopkins, Franz G. Seegner and David Liptak, for Violin, Piano and Recorder, style Baroque and Classical
By Marco Falaschi and Helmut W. May, for Viola and Saxophone, style Classical
By Fernando Sor, Carl Joachim Andersen and Dionisio Aguado, for Guitar and Flute, style Classical Period
By Henri Jérôme Bertini and Alfred Uhl, for Clarinet and Piano
By Rudolf Schingerlin and Hans-Martin Linde, for Piano, Viola and Recorder
By Novato Music, Danny Crocome and Kenneth Pasciak, for Guitar and Electric guitar, style Latin, Country and Rock