This video is from the ceremony where the Norwegian metal band TNT was inducted into The "Rockheim Hall of Fame", in Trondheim, Norway, in 2019.
"Rockheim" is Norway's national museum of modern music, from 1950 and onwards.
As their tribute, Enslaved played this cover version of the song "Knights of The Thunder", originally recorded by TNT, and released on their second LP "Knights of The New Thunder" in 1984. One of Norway's finest metal albums, by the way.
This show was broadcasted on Norwegian national TV, NRK TV, in December 2019.
