Mustasch is a heavy metal band, founded in fall 1998 by Ralf Gyllenhammar, Hannes Hansson, Mats Hansson and Mats Johansson on the Mustasch farm on the island Orust in Sweden. All members were active before as punk band Grindstone. http://www.mustasch.net/
These are photos from concerts where Mustasch played, so they may be of other bands that played the concert as well.
Sweden Rock Festival 2017 Jun 7 - 10, 2017 Norje, Blekinge, Sweden Uploaded by Jarle Lindeland