The past is the past.
President Barack Obama welcomed K-Pop sensation Psy to a Christmas charity concert in Washington over the weekend, despite the anti-American lyrics Psy rapped at a 2004 concert in Korea.
Psy has apologized for the comments.
The performer, dressed in red sequins, performed his viral-hit song "Gangnam Style," which has been viewed on YouTube more times than any other video.
Hosted by Conan O'Brien, the concert also featured Diana Ross, Demi Lovato, Megan Hilty and past "American Idol" winner Scotty McCreery.