Josef Casimir Hofmann (originally Józef Kazimierz Hofmann; January 20, 1876 – February 16, 1957) was a Polish American virtuoso pianist, composer, music teacher, and inventor.
Josef Hofmann was born in Podgórze (a district of Kraków), in Austro-Hungarian Galicia (present-day Poland) in 1876. Hofmann was of partial Jewish ancestry. His father was the composer, conductor and pianist Kazimierz Hofmann, and his mother the singer Matylda Pindelska. A child prodigy, he gave a debut recital in Warsaw at the age of 5, and a long series of concerts throughout Europe and Scandinavia, culminating in a series of concerts in America in 1887-88 that elicited comparisons with the young Mozart and the young Mendelssohn.Anton Rubinstein took Hofmann as his only private student in 1892 and arranged the debut of his pupil in Hamburg, Germany in 1894. Hofmann toured and performed extensively over the next 50 years as one of the most celebrated pianists of the era. In 1913, he was presented with a set of keys to the city of St. Petersburg, Russia.
As a composer, Hofmann published over one hundred works, many of those under the pseudonym Michel Dvorsky, including two piano concertos and ballet music. He made the United States his base during World War I and became a US citizen in 1926. In 1924, he became the first head of the piano department at the inception of the Curtis Institute of Music, Philadelphia, and became the Institute's director in 1927 and remained so until 1938.
He was instrumental in recruiting illustrious musicians such as Efrem Zimbalist, Fritz Reiner, Marcella Sembrich, and Leopold Auer as Curtis faculty. Hofmann's pupils included Jean Behrend, Abram Chasins, Abbey Simon, Shura Cherkassky, Ezra Rachlin, Nadia Reisenberg (see ), and Harry Kaufman. While not a pupil, Jorge Bolet benefited from Hofmann's interest. In 1937, the 50th anniversary of his New York debut performance was celebrated with gala performances including a "Golden Jubilee" recital at the Metropolitan Opera, New York City. In 1938 he was forced to leave the Curtis Institute of Music over financial and administrative disputes. In the years from 1939 to 1946, his artistic eminence deteriorated, in part due to family difficulties and alcoholism. In 1946, he gave his last recital at Carnegie Hall, home to his 151 appearances, and retired to private life in 1948. He spent his last decade in Los Angeles in relative obscurity, working on inventions and keeping a steady correspondence with associates.