Worship Music is the tenth studio album by American thrash metal band Anthrax. It is their first album of original material since 2003's We've Come for You All. Not only is Worship Music Anthrax's first studio release in eight years, but the album marks the return of vocalist Joey Belladonna, whose last studio work with the band was 1990's Persistence of Time. Belladonna is now firmly back in the Anthrax line up with drummer Charlie Benante, guitarists Scott Ian and Rob Caggiano, and bassist Frank Bello.

The 11-track Worship Music was produced by Anthrax, Rob Caggiano and Jay Ruston and recorded over a four-year period at studios in New York, Los Angeles and Chicago. Belladonna's return to the band prompted some of the songs originally recorded to be re-crafted with fresh lyrics or tweaked to better suit his overall vibe and energy. Some of the songs were completely replaced with brand-new songs and, of course, all have Belladonna's inimitable vocal stamp on them.