Another song that my students beg for is 'Hace tiempo' by Fonseca. We call it "the dancing firemen song" and the video will show you why. They think it's funny that the song isn't really a happy one, but it sounds so cheerful, and while he's singing it in the video he looks so cheerful.
It's a great song for singing, learning to wrap your mouth around Spanish words. There's one line even I have a hard time with. I primarily use it to work on reflexives--there are a bunch of them. Also, the 'yo' present is prevalent without, as well as other present verbs.