 Come on, man, you can do this. This is Robert's friend and bandmate Will Hammond, who's also a music publisher. He sings the ballad. Both musicians wanted the song to be more than funny, to actually tell people about heat pumps. Hammond explains. Remember when we went from standard definition television to high definition television? So people had to be trained. I think the same goes for this. It's sort of like edutainment. So we're educating people, but we're also entertaining them. I'm sweet.