A Dramatic Turn of Events is the eleventh studio album by American progressive metal band Dream Theater, released worldwide on September 12, 2011 and in the United States on September 13 through Roadrunner Records. It is the band's first recording to feature drummer Mike Mangini following the departure of founding member Mike Portnoy in September 2010. The album was written, recorded, mixed, and mastered between January and June 2011 at Cove City Sound Studios in Long Island, New York. It was produced by John Petrucci and mixed by Andy Wallace. One single, "On the Backs of Angels", was released in promotion of the album.