Pop Charts Britannia: 60 Years of the Top Ten is on BBC Four on Friday 16 November 21:25 GMT.

BBC: Charts seek to stay on top after 60 years

The response to 2NE1 as it continues its seven-country, ten city world tour will offer many clues as to the ceiling of K-Pop outside of Asia.

FORBES: Bigger Than Psy: 2NE1 And The Future Of K-Pop