Every song except "Da-Doo" is different on the soundtrack album. There are both drastic and minor deviations in orchestrations, singers, vocal takes, and several songs include additional verses and/or alternate lyrics. The single version of "Dentist!" includes sound FX and dialogue from the film (extensively featuring Bill Murray), as well as the line "He's strictly a medical mess," which doesn't appear in any other release of the song. There are several different single radio edits of "Mean Green Mother From Outer Space," and a 12" version which begins with the soundtrack album's ominous alternate "Prologue" seguing into the song.