Guest Shakes - In Joseph Scott's video I think Garrison is singing like that on purpose. He can sing better, but in that instance it's more like a comedy skit and he's playing the part of someone who can't sing very well, and all the other people keep telling him to please stop. They sing it like an opera, but it's funny so it's like a comedy skit opera.

Oftentimes in the skits Garrison plays the sad sack who everyone makes fun of. Sometimes he'll play a young man who's trying to make it in the art world, but his art is just junk, and he just ignores it when people tell him it is. Only then they'll just say the words instead of singing them because it's not about a singer.