Stashed in: Music Videos!, Guitars!, @eminem, A Cappella, Music Videos
Consensus on Reddit is that the sound was prerecorded.
Still, impressive video.
San Francisco 49ers O-line powers the run game
Does the Romney Family Now Own Your e-Vote?
Scientists confirm reprogrammed adult stem cells are identical to embryonic stem cells.
How the Universe Works: Stephen Hawking’s Theory of Everything, Animated in 150 Seconds | Brain Pickings