How Much Do You Really Know About ‘Gangnam Style’ Singer Psy?

Psy performs on NBC's "Today" show in New York (Reuters)

Psy onstage with host Kevin Hart. (Reuters)

Psy performs during his concert in Seoul (Reuters)

Psy performs as fans hold up his music CDs during his concert in Seoul (Reuters)

Psy poses during an interview before his concert in Seoul (Reuters)

Psy dances after a news conference at a hotel in Seoul (Reuters)

Psy answers a reporter's question during a news conference at a hotel in Seoul (Reuters)