Collection of 70 studies, moving progressively from easier to more difficult, by a variety of composers. Composers include Mueller, Bleger, Bordogni, Blazhevich, Kopprasch and others. The etudes range in length from a half to full page. Most are in bass clef, though many switch into and out of tenor. Primary areas of study include sequences, rhythmic patterns and scalar passages. The book is a good all-around etude book for someone who would like a compact collection covering a wide variety of study material. 70 etudes over 50 pages. -cdp