Not to be outdone by cats, here's a dog singing the "Game of Thrones" theme.
"Can you sing, Master Hobbit?"
"If you like it then you shoulda put a ring on it..."
"Oh, shut up."
(Lord of the Rings)
(Leonard Nimoy, Deforest Kelley, Star Trek)
"Hi ho, hi ho, it's off to work we go ..."
John Barrowman sings a song about Superheroes. Torchwood, DC and Marvel? Sounds like the best crossover ever imagined.