Dating from the mid-1960's, these etudes are highly technical in nature, with large range movement, mixed meters and short rhythms. Each etude is approxamately one page in length. Page turns, when needed, are well planned with strategically placed rests or fermatas. The etudes are atonal and chromatic. Tessitura is wide, ranging from F below the staff (F1) to the top of the staff, with some material extending both ways. --cdp