There is more than one artist by the name of Madsen.
These are photos from concerts where Madsen played, so they may be of other bands that played the concert as well.
Hurricane Festival 2018 Jun 22 - 24, 2018 Scheeßel, Lower Saxony, Germany Uploaded by Athousand Suns
Deichbrand Festival 2013 Jul 18 - 21, 2013 Cuxhaven, Germany Uploaded by Juliana Lotte
Highfield Festival 2010 Aug 20 - 22, 2010 Großpösna, DE Uploaded by Grinsplinsen