The show Phineas & Ferb is the secret musical weapon of kids' TV. Oh, sure, Yo Gabba Gabba! and The Wiggles (and others) are musically-oriented, but the Disney Channel show sneaks in musical bits that are as tuneful (and usually funnier) as anything airing on the youngster channels. Creators Dan Povenmire and Jeff "Swampy" Marsh write in many different styles, composer Danny Jacob brings it all together production-wise, and the result is, well, something like this.
I've told you about my secret appreciation for all things platypus, right?
Dr. Doofenshmirtz - "There's a Platypus Controlling Me" (from Phineas & Ferb episode "Brain Drain") [YouTube]
