Schreiner has also been a part the bands The Vikings, Black Diamond Brigade, Mirror Lakes.

Schreiner plays lead guitar and sings backing vocals in the Norwegian band Turbonegro, known in Norway as Turboneger.

Schreiner formed the band Mirror Lakes in 2010 in partnership with vocalist Frode Fivel.

Other band members include Trond Mjøen, Havard Krogedal and Arne Mathisen.

Schreiner studied cultural sociology at the University of Oslo and works in urban planning.