What is "rareform"

Rareform is the second studio album by American progressive metal band After the Burial. It was released on July 22, 2008 through Sumerian Records. On September 15, 2009, the band released a re-mixed and re-mastered version of Rareform with alternative artwork and bonus features along with it being completely remastered with live drums and re-recorded vocals from the band's current vocalist, Anthony Notormaso in contrast to Grant Luoma, who performed lead vocals for After the Burial upon the first issue of Rareform. Both editions of the album were produced by the band's rhythm guitarist, Justin Lowe. "Berzerker" was featured in Saints Row: The Third