传记 Founded in 1966 in Skjern, Denmark, by brothers Peter A.G. Nielsen (vocals) and Jens G. Nielsen (drums), Gnags are a Danish rock band originally founded in the 1960s whose popularity spans decades, extending into the next century. While other bandmembers came and went over the decades, the one constant was Peter (born December 17, 1952, in Skjern, Denmark) as the band's well-known frontman. Jens left the band in 2000 after four decades of activity.