Aethenor is comprised of Stephen O'Malley (Sunn0))), KTL), Daniel O'Sullivan (Ulver, Mothlite, Guapo), Kristofferson Rygg (Ulver) and Steve Noble (N.E.W., Company, etc.). en Form for Bla documents the continued evolution of this unlikely collective, a collision of players from various avant, improv, metal, and "other" threads who together make a unique and arresting sound. Documenting three gigs in Oslo recorded in 2010, the album is deep and weird, with liquid sounds juddering around the occasionally identifiable percussion or Rhodes motif.