Henry Cowell, American pianist and composer (died 1965)

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.

March 11 is the 70th day of the year in the Gregorian calendar; 295 days remain until the end of the year.