In addition to being a conductor Leonard Bernstein was also a composer. what song did he write?

Leonard Bernstein composed many well-known works, one of the most famous being "West Side Story," which includes iconic songs like "Something's Coming," "Maria," and "Tonight." This musical, which premiered in 1957, is a modern retelling of Shakespeare's "Romeo and Juliet," set in New York City. Bernstein's ability to blend Classical Music with jazz and popular styles contributed to the show's enduring popularity.