Norwegian Metal - In Concert is a photo catalogue with 60 pictures from the Norwegian metal rock scene. Among the bands are Dimmu Borgir, Satyricon, Enslaved, Mayhem and 1349. All of these bands are veterans among the Norwegian metal bands. The catalogue was made in cooperation with Galleri MAP for the exhibition with the same name in Oslo in 2012. Per Ole Hagen works with music intellectual property at NRK, the Norwegian Broadcasting Corporation. He has worked as a rock journalist, teacher, lecturer, music critic, and has been a concert photographer for many years.