At the end of 2005, Iron Maiden began work on "A Matter of Life and Death", their fourteenth studio album, released in autumn 2006. While not a concept album, war and religion are recurring themes in the lyrics, as well as in the cover artwork. The release was a critical and commercial success, earning the band their first top ten in the "Billboard" 200 and receiving the Album of the Year award at the 2006 "Classic Rock" Roll of Honour Awards. A supporting tour followed, during which they played the album in its entirety; response to this was mixed.