Jareth is an equal-opportunity kind of guy, and for lack of any better ideas, Jamie and Erik play along.
For those of you who don't know, John Barrowman also sings a number of Andrew Lloyd Webber songs, notably in Raoul's role.
Erik belongs to Leroux and Webber.
Jareth belongs to Henson, Lucas, and Bowie.
Norrington belongs to Disney, Bruckheimer, and Davenport.
Javert belongs to Hugo, Boublil, Schonberg, and Kretzmer.
Cain and Glitch belong to Blotevogel, Mitchell, Van Sickle, Sci-Fi Channel, McDonough, and Cumming.
Captain Jack Harkness belongs to the BBC and Barrowman.