Beyonce is not the first artist to title her album after a number. Here are 11 more - one of which B may have to unseat from the top of the charts when her fourth solo album, 4, is released next month.

Chicago, Chicago III-Twenty 1 (1971-91): Chicago had a simple formula for naming albums: band name + number of albums in band's catalog. Basically, each album was titled according to its sequence in Chicago's discography, just in case they ever forget how many they had released.