Hans Jørgen Undelstvedt is the lead singer of the Norwegian rock band Heroes & Zeros.Flaa, Jørund. "Feirer 10 år med ny plate" (in Norwegian), Agderposten, May 14, 2014. He also plays guitars and samples. In addition, he writes the lyrics for his band.
See also Heroes & Zeros Lars Løberg Tofte Arne Kjelsrud Mathisen
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