Because the album was released a year after the departure of creator John Kricfalusi, the Ren Höek vocals were re-recorded by Billy West.
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Bob Camp (who replaced Kricfalusi as showrunner) took his role of Stinky Wizzleteats in the album version of "Happy, Happy, Joy, Joy."
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The album cover is a parody of The Beatles album Abbey Road, showing Mr. Horse, Muddy Mudskipper, Stimpy, and Ren walking across the street in the place of the Beatles.