Gnags is a Danish rock band from Skjern formed by Peter A.G. Nielsen and his elder brother Jens G Nielsen in 1966 though the band did not start playing regularly till 1968 after winning the Danish national championship in "beat music". Their championship title paved the way for the band's first two singe recordings "Eyes and Ears" and "I can't talk about it now". Sven Fenger left the band in 1969/70 after which Gnags continues as a trio playing at a number of Danish festivals as well as in Amsterdam in Holland.
The band moved to Aarhus in 1971 and set themselves up in a commune. It was from Aarhus that they recorded their first album "Paa vej", which was released in 1973. As the band had financed the album out of own pocket, they sold the distribution rights to the record producer and musician Johnny Reimar. Struggling to find a record label Gnags created Genlyd Records in 1974 the same year as Per Christian Frost and the year after Ivan Oehlenschaeg Sørensen joined the band. With an extended band and their own record label Gnags released their second album in 1974 Del af en ring, which was an instant success.
Gnags created Feedback studios in 1975 from which most of their subsequent works have been recorded.