The album was originally supposed to contain ten songs, but he revealed before the American Music Awards of 2011 that Monster will contain fifteen brand new songs, all studio written by the band.
Albumet var ursprungligen tänkt att innehålla 10 låtar, men Simmons avslöjade innan 2011 års American Music Awards att Monster skulle innehålla 15 helt nya låtar som alla skrivits av bandet.