Some music was changed for the 1993 VHS release.
Among the audio changes on the 1993 video release (and carried over to every video release since, including DVD and Blu-ray): -- At the beginning of "Happiness Hotel," a trombone gliss is heard after Pops's first line. -- Also, during "Happiness Hotel," after Zoot mentions Animal's being upset about missing a Rembrandt exhibit, Animal shouts "Renoir!" -- The song "Night Life" has lyrics; it was instrumental before. -- The music during the Muppets' "checklist" (whoopie cushion, rubber raft, bag of chickens, etc.) is different. In the 1993 version, it's more comical-sounding. -- When Miss Piggy crashes through the window and leaps off the motorcycle, her trademark "Hi-yaaah!!!" is removed.