Hm. I could be wrong but I'm pretty sure Frank was singing a Bob Marley song, "Don't worry, about a thing, cause every little thing's gonna be alright"

I'm there with you with Don't worry, be happy. It wasn't so bad except it got so overplayed.

They're definitely spinning out a lot of side plots. How about that whole bit with Karen's boyfriend and the untouchable slimeball?