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“Cha-Cha,” “Maria,” and “Cool” from West Side Story by Leonard Bernstein, lyrics by Stephen Sondheim. Copyright © 1956, 1957, 1958, 1959 by Amberson Holdings LLC and Stephen Sondheim. Copyright renewed. Leonard Bernstein Music Publishing Company LLC, publisher. Boosey & Hawkes, Inc., soleagent. International copyright secured.