Translation: Sonatas and Interludes for Prepared Piano composed by John Cage. 1912-1992. American Classics.
Translation: Sonatas And Interludes For Prepared Piano composed by John Cage. Piano sheet music. Intermediate.
Translation: Thus the titles "Sonata for Prepared Pianist", "Sonata for Unprepared Pianist" and "Sonata for a Quiet Pianist".