Psy, Snoop Dogg, and Jimmy Kimmel do Karaoke in Los Angeles

Psy and Snoop Dogg headed to South Korea for their collaboration on Hangover.

It sounds like it was a wild time over there, working on a music video for 18 hours straight, with no break.

That’s why, when they got back to Los Angeles, they headed out for, what else? Karaoke!

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