In 2001, Tharp revised Grosse Sonate, converting the quartet into a sextet and retitling the work Hammerklavier. Though much of the original material was maintained, the addition of new dancers provided Tharp with additional choreographic options.
Hammerklavier, or, Piano Sonata No. 29 in B-flat major, Op. 106
Composed by Ludwig van Beethoven
2. Scherzo: Assai vivace
3. Adagio sostenuto
4. Introduzione: Largo - Fuga: Allegro risoluto