Polish-born American pianist, especially noted for his glittering performances of the music of Frédéric Chopin.

He gave his first concert at the age of 6 and toured the United States at 11. Later he studied with two leading pianists of the late 19th century, Moritz Moszkowski and Anton Rubinstein. He resumed his public career at 18 and from 1898 lived mainly in the United States. From 1926 to 1938 he was director of the Curtis Institute of Music, Philadelphia. His playing was considered noble and poetic, free from any eccentricity, and never routine. He composed a symphony, five piano concerti, and solo piano music, some published under the pseudonym Michel Dvorsky. He also wrote three books on piano playing.