Henry Dreyfuss Brant was a Canadian-born American composer. An expert orchestrator with a flair for experimentation, many of Brant's works featured spatialization techniques.
Henry Brant
Henry Dixon Cowell was an American composer, writer, pianist, publisher, teacher and the husband of Sidney Robertson Cowell. Earning a reputation as an extremely controversial performer and eccentric composer, Cowell became a leading figure of American avant-garde music for the first half of the 20th century — his writings and music serving as a great influence to similar artists at the time, including Lou Harrison, George Antheil, and John Cage, among others. He is considered one of America's most important and influential composers.
Photo from promotional flier for Cowell's 1924 Carnegie Hall debut
Henry Cowell playing the violin — aged 5 (c. 1902)
The original manuscript to Dynamic Motion (1916), showing the young Cowell's early methods for notating large piano clusters
Cowell playing the piano, demonstrating his "forearm" technique by slamming down with his right arm on the middle register, c. 1920s