This style was previously used solely by violinists, violists and cellists. "Trauermusik" immediately entered the repertoire of violists, as well as cellists and even violinists. He shaped a generation of viola students and produced internationally renowned violists. Among those noted both as violists and as composers are Rebecca Clarke and Paul Hindemith. Modern violists regard these "Pieces de viole" as the most virtuosic music for the instrument. She is recognized as one of the world's top violists. His works are appreciated by violists around the world. Violists require hands large enough to be able to accomplish fingering comfortably.