György Ligeti's three books of études for the piano explore and extend the possibilities of the instrument and the interpreter as do very few other works in the contemporary literature:
Diapason D'or; Le Monde de la Musique: Choc du Mois; Fono Forum: Stern des Monats; CD Compact: Recomendado; New York Times: Critic's Choice; Music Web: outstanding; Classics Today 10/10, highest rating.