What's Up With the Ending?
What—didn't you want Nigel to come back?
As this is a light-hearted comedy, of course everything has to turn out hunky-dory. Nigel returns and rejoins the band, he and David are no longer at odds, the band is back on top (albeit in another country), and Jeanine is annoyed. All's well that ends well.
And then we get the bonus footage while the end credits roll, which wasn't a totally common practice back then, but made great use of a bunch of hilarious footage that didn't quite make the final cut of the film.
Plus, we finally get to hear from the keyboard player! Have a good time all the time indeed.