If Only (Quartet) is a song of the Broadway musical, The Little Mermaid, which is sung by Ariel, Prince Eric, Sebastian, and King Triton. The song appears during the second act at the end of the second day. A duet version of the song is heard in The Wonderful World of Disney: The Little Mermaid Live!; however, it omits the parts where Sebastian and King Triton sing in this version.