Fortress is the fourth
studio album by the rock band
Alter Bridge, released by
Roadrunner Records on September 25, 2013.
Michael "Elvis" Baskette, who produced Alter Bridge's previous two albums,
Blackbird and
AB III, returns as producer. It was released by Roadrunner Records worldwide except in the United States, where it was self-released on October 8, 2013, through
EMI. The lead single, "
Addicted to Pain", was released on August 12, 2013. The album was widely acclaimed, with critics praising its musicianship, lyrics, and experimentation.