Cool (West Side Story song) Cool (West Side Story song) "Cool" is a song from the musical "West Side Story". Leonard Bernstein composed the music and Stephen Sondheim wrote the lyrics. This song is known for its fugal treatment of a jazz figure, described by one writer as "possibly the most complex instrumental music heard on Broadway to date". In 2011, actor Harry Shum Jr. performed the song, as his character Mike Chang from TV series "Glee", in the third episode of season 3, "Asian F" (aired on October 4). An episode of "Animaniacs" features a parody version as "Coo Bird" sung by Bobby of
Stephen Sondheim of "Into the Woods", including "Rainbows" (which he included in his second book). In February 2012 it was announced that Sondheim would collaborate on a new musical with David Ives, and he had "about 20–30 minutes of the musical completed". The show, tentatively called "All Together Now", was assumed to follow the format of "Merrily We Roll Along". Sondheim described the project as "two people and what goes into their relationship ... We'll write for a couple of months, then have a workshop. It seemed experimental and fresh 20 years ago. I have a feeling it may not be experimental