'West Side Story Ballad is a song from the musical West Side Story, which is based on the classic Romeo and Juliet story. The song is sung by the character Maria, who is a Puerto Rican immigrant living in New York City. The song is a love ballad about Maria's feelings for Tony, a member of the rival gang. The song is a beautiful and romantic expression of Maria's love for Tony, and it has become one of the most iconic songs from the musical.'