The Human Abstract was an American progressive metalcore band from Los Angeles, California. Formed in 2004, the group was originally signed to the independent label Hopeless Records, the band then released the two albums Nocturne (2006) and Midheaven (2008) before signing to eOne Music and releasing Digital Veil (2011). The Human Abstract went through several lineup changes over the years, with the final consisting of founding members Dean Herrera, A.J. Minette and Brett Powell, in addition to Henry Selva and Travis Richter.

Protest the Hero is a Canadian progressive metal band from Whitby, Ontario. Originally named Happy Go Lucky, the band changed their name to Protest the Hero, then released their debut EP, Search for the Truth, in 2002. In 2005, the band released their first album Kezia on Canadian indie label Underground Operations.