Lily Allen Music Video Who'd Have Known. Who'd Have Known is a song performed by British Recording Artist Lily Allen and is the fifth single from her second album It's Not Me It's You. The song received positive reviews with Rolling Stone magazine categorising the ballad as a sure fire hit. The song was released November 2009 and was particularly successful in Holland and Australia whilst it also charted within the British TOP 40.
Running time: 03:49
whod have known