"We never met (until) after the song was done. I was in Asia and he was here (in Los Angeles) and so he was doing his part in L.A. and I'd do my part in Korea. We were on the phone and we did it by Internet." Pop sensation Psy didn't meet his Hangover collaborator Snoop Dogg until they filmed the video for the catchy new song. The video premiered on YouTube.com on Sunday (08Jun14).