Founded 1995 in London by Austrian trumpeter and band leader Franz Hautzinger as an ensemble for experimental music, the project developed over the years into a mixed style wild fusion band. Various musicians like Fennesz, Tony Buck, Otomo Yoshihide, Burkhard Stangl, Oren Ambarchi, and others were part of this long-time and often changing project, combining jazz, improvisation, brass melodies, guitar rock and electronics. The band developed its specific pulsating and continously evolving "Regenorchester Sound", comparing the constantly changing ways of making music, analogue and digital. Hautzinger and his Regenorchester XII play a kind of “jazz about jazz”, incorporating quite naturally accomplishments of experimental improvisation or drone and noise experiences into the rock jazz sound, pushing the boundaries of sound art and always creating surprises.

Relics was recorded live at the Klangspuren Schwaz festival in 2019.