<prompt> Translate the following text to EnglishAlikuwa maarufu kwa muziki wake wa Broadway West Side Story na Fiddler on the Roof na alishiriki katika kuunda muziki wa muziki wa kisasa na hatua za dansi maarufu na ballet ya kawaida.  <response>: 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. 