Guitarwave has 4 Klangstof concerts.

The dreamy alt-indie of Amsterdam-based group Klangstof is the product of Norwegian singer/songwriter and producer Koen van de Wardt. His earliest inspiration was Radiohead's OK Computer, which he used to hone his instrument-playing skills. Once he started writing his own material, he bolstered his songcraft abilities with studies at Hedmark University College in Norway. After a stint as bassist with Dutch indie band Moss, van de Wardt committed himself to the Klangstof project in 2014.