Johann Sebastian Bach: The Well-Tempered Clavier (excerpts) 

Mathias Halvorsen, prepared pianos 
Produced by Johann Günther 
Ida K. G. Hatleskog, visual concept 

Features piano preparations made by Ingibjörg Friðriksdóttir, Michael Rauter and Mathias Halvorsen. 

A production from Backlash, with support from #BeBeethoven.