The Pitch was formed in 2009 by Michael Thieke (clarinet), Koen Nutters (acoustic bass), Morten Olsen of MoHa! (vibraphone/percussion), and Boris Baltschun (electric pump organ / function generator). The quartet is at times expanded with guest musicians and additional conceptual elements to undertake large-scale ensemble pieces such as Frozen Orchestra, which featured a number of musicians focusing on slowly evolving textures and the blending of instruments. A Pitch performance in Brussels was released as an LP, Transposition Zero, on French imprint Gaffer Records in 2010.