Best known for his Broadway musicals West Side Story and Fiddler on the Roof , his greatest contribution is said to be the integration of Modernist innovations and popular dance steps with classical ballet.
He is known for the integration of Modernist innovations and popular dance steps with classical ballet, and his most popular Broadway musicals were West Side Story and Fiddler on the Roof.
He was a failure on broadway, none of his shows were ever successful and he has made zero important contributions to the theater world.