Internationally acclaimed rock band Stone Sour have dropped a video for their acoustic version of “Mercy.” This track is featured on the Hydrograd Deluxe Edition which is a collection of unreleased covers, b-sides, live recordings and alternate versions of songs from Stone Sour’s highly acclaimed Hydrograd released last year. The deluxe edition also features the track “Burn One Turn One” as well as thirteen rare or unreleased songs, including an acoustic take on the #1 rock track “Song #3.” There’s also covers of songs from Soundgarden, Rage Against The Machine and Van Halen!