(b NY, 1889; d Vineyard Haven, Mass., 1964).
Amer. pianist, composer, teacher, and inventor. Son of David Mannes and nephew of Walter Damrosch. Teacher of comp. at Mannes Sch. 1927–31, dir. 1940–8, president 1950–64. Founded pf. trio 1948–55. Gave up mus. for period in 1920s while with Leopold Godowsky jr. he invented Kodachrome photographic colour process at Eastman Kodak Co., Rochester, NY. Wrote orch. and chamber mus.