Think the growth of the solo piano repertoire began with J.S. Bach and ended with Debussy? Think again. Among those who have made significant contributions to the solo piano literature in the 20th and 21st Centuries, the late Györgi Ligeti shines brightest. His three books of etudes for piano, the latter of which was unfinished at the time of his death this past June, exhibit the composer’s love of humor, beauty, and mathematics. They also reveal a depth of knowledge about the piano and the abilities of the human hands that is unrivalled.