History "Monster in the Mirror" was composed by Christopher Cerf and Norman Stiles and copyrighted in Dulcy Singer, the executive producer of Sesame Street, said in a interview with United Press International that the song is about Grover's noticing a monster in the mirror before figuring out the monster is himself. The song revisits a theme in the book The Monster at the End. Sesame Street- Monster in the Mirror Monster in the Mirror features Grover singing the song while seeing himself in reflective materials in the bedroom and the street but was never afraid of it. It was written by Christopher Cerf and Norman Stiles and produced by Jim Blashfield and the music was arranged by Paul Jacobs. The Monster In The Mirror Lyrics: Saw a monster in the mirror when I woke up today / A monster in my mirror but I did not run away / I did not shed a tear or hide beneath my bed / Though the.