Periphery is the debut studio album by American progressive metal band Periphery, signed by Sumerian Records and released on April 20, 2010. Many songs on the track list had been written long before the release date but due to vocalist complications the debut album had been postponed on several occasions. Former vocalist Chris Barretto had nearly finished recording the album before he and the band parted ways months before its release. Rather than release the songs with Barretto's vocals, the band decided to rerecord Barretto's songs with Spencer Sotelo; however, Sotelo only re-worked a few of the melodies when recording vocals, versus writing completely new lyrics. As a result, Sabol's and Barretto's lyrics and vocal melodies and harmonies are still featured on the record. The album was re-released on February 6, 2012 as a 'Special Edition' including instrumentals, along with a new song "Passenger," originally recorded by guitarist Mark Holcomb during his time in the band Haunted Shores.