Supernatural Best Singing and Dancing Moments (S10, S11, S15 spoilers)

"There's no singing in Supernatural" according to Dean... Well he's obviously wrong about that. Here's some of the best singing moments to come out of Sam and Dean as well as a few other guest stars. From Deanmon's bad karaoke to Chuck's farewell song and Billie's ode to death.
If there are any singing or dancing moments I've missed please let me know in the comments and there may be a follow up video!