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.

Scale the Summit is an American instrumental progressive metal band formed in Houston, Texas in 2004. The band comprises guitarist Chris Letchford, bassist Kilian Duarte and drummer Charlie Engen. They were signed to Prosthetic Records before the band decided to release their work independently. The band is influenced by other progressive acts such as Cynic and Dream Theater. The band gained notice as part of the Progressive Nation 2009 tour with Dream Theater, Zappa Plays Zappa and Bigelf.