Listen to Who'd Have Known (Originally Performed By Lily Allen) [Full Vocal Version] online. Who'd Have Known (Originally Performed By Lily Allen) [Full Vocal Version] is an Unknown language song and is sung by Paris Music. Who'd Have Known (Originally Performed By Lily Allen) [Full Vocal Version], from the album Karaoke Hits Lily Allen, was released in the year 2014. The duration of the song is 3:54. Download Unknown songs online from JioSaavn.