The show's theme song was "This Is It", written by Mack David and Jerry Livingston (""Overture/curtain, lights/this is it/the night of nights...""). The opening title sequence, animated by Freleng unit animator Gerry Chiniquy, features Bugs and Daffy Duck performing the song in unison. For the final chorus, a lineup of "Looney Tunes" characters joins Bugs and Daffy onstage (Porky Pig, however, is absent from the procession, although Porky had a spin-off show based on the original "Bugs Bunny Show" 4 years later titled "The Porky Pig Show" which aired on ABC from 1964 to 1967).