 In addition to their appearance in the film , Green Day recorded its own version of the Simpsons theme , and released it as a single . Zimmer turned the Spider @-@ Pig song into a choral piece , which was a joke he never intended to be put into the film . Zimmer also had to write foreign @-@ language lyrics for the 32 dubbed versions of the song when the film was released internationally . He found translating the song into Spanish the hardest to write . The same choir learned to sing the piece for each of the foreign @-@ language dubs . 
