When the band split up in "Drift Away", Lips wants to change the world, just like he was told to do in his hallucination in "Break on Through". Less obvious is that the three band-members whose hallucinations enabled them to get past issues in the song-writing process also base their new directions on this: Dr Teeth, no longer afraid of commitment, decides to devote more time to Penny; Janice's new "loving herself" philosophy leads to her personality cult; and now that Floyd is no longer a perfectionist, he discovers he can write simple jingles in seconds.
Fridge Horror
Meet the Feebles is canon within the Muppets universe. Let's hope that they are considered 'actors' like The Muppets themselves.
Additionally, unless we assume Broad Strokes was applied to the plot of the film within the Muppets universe, Peter Jackson's comment about two of the Feebles being in witness protection, while the rest were in prison, implies that most, if not all, of the Feebles who survived the massacre may have been victim to a Happy Ending Override.
A Freeze-Frame Bonus in Track 7 has a date in the calander marked as "Tell Lips he's adopted". Since the Mayhem has existed since 1975, and Lips is The Sixth Ranger who entered in 1980, shouldn't he already know that? Additionally, since Animal is actually adopted, what do the Mayhem think adoption actually is? Or did someone just write that one to be a dick?