It is a band that originally included the musicians Hörður Bragason, Músikvatur, Úlfur Eldjárn and Jóhann Jóhannsson.

Lacking the time to dedicate himself to the group because of his solo projects, Jóhann Jóhannsson left the band in 2012;[1] he died in February 2018.

The second album of the band, Pólýfónía, was released on 9 December 2010 on 12 Tónar in Iceland, and in 2011 by the Danish label Crunchy Frog in Scandinavia.

They have been compared to such different acts as Kraftwerk, Wagner, Goblin, Terry Riley, Steve Reich, Sigur Rós, the Glitter Band, Stereolab and Trans Am.

[4] Apparat Organ Quartet's members (and former members) and their extra curricular activities include: Apparat Organ Quartet was one of many Icelandic bands documented in Ari Alexander Ergis Magnússon's 2005 film Screaming Masterpiece (Gargandi Snilld in Icelandic).