During a 2021 interview with The Ringer, Shrek co-director Andrew Adamson said he loved The Monkees’ “I’m a Believer.” He tried to convince Smash Mouth to contribute a cover of the song to the movie.

Smash Mouth liked their cover of The Monkees’ “I’m a Believer” that appeared in Shrek. Members of the band were concerned about the film’s quality. Both the original song and the cover were huge hits.

"I'm in love....oooooh!" The 1966 Monkees hit “I'm a Believer” has been added to Shrek the Musical. A popular element in the first Shrek feature film (in which it was sung by Smash Mouth and Eddie ...

Audiences at Shrek are now getting an extra bonus: a curtain call performance of "I'm a Believer," the Monkees song that helped make the film version of the fairy tale a smash. The stars of the show, ...