Арыгінал: ALAP a Prelude to Contrapunctus IX of the Art of the Fugue. Charles Wuorinen. Cello sheet music. Viola sheet music. 1938-.
Пераклад: ALAP a Prelude to Contrapunctus IX of the Art of the Fugue composed by Charles Wuorinen. Чарльз Вуоринен. Віяланчэль: ноты.