Rock in Opposition a.k.a. RIO

Rock in Opposition or RIO was a movement representing a collective of progressive bands in the late 1970s united in their opposition to the music industry that refused to recognise their music. It was initiated by English avant-rock group Henry Cow in March 1978 when they invited four mainland European groups to come to London and perform in a festival called "Rock in Opposition".

(Από τη Wikipedia)

http://en.wikipedia.org/wiki/Rock_in_Opposition