The two crossword solutions for the term 'West Side Story Tune' are 'Maria' (5 letters) and 'Tonight' (7 letters). 'Maria' is a song from the musical West Side Story, composed by Leonard Bernstein with lyrics by Stephen Sondheim. It is sung by Tony, the male lead, as he falls in love with Maria, the female lead. 'Tonight' is another song from the musical, also composed by Bernstein and Sondheim. It is a duet between Tony and Maria, expressing their joy at being together.