Something I've noticed about a lot of the songs from Phineas and Ferb: They all have nice music and are catchy and upbeat, it's just that the choreography animation is a little repetitive to me and the lyrics sound like they were Mad Libbed.
Well they do reuse a lot of stuff, but they didn't go wrong in the first place, so it's not that bad a few times over. However, it'd be nice to see something new.