GRB were a hardcore punk band from Barcelona (Catalunya, Spain), formed in 1984 by former members of the seminal punk bands Ultimo Resorte and Frenopaticss. They self-released a demo tape (1985), a second self titled tape (1985) and the 7-track EP Estoy Tan Contento ! (1986). They also released an LP, Cuentos Y Leyendas (1988), but is with this EP that became a pillar of Spanish hardcore. They disbanded in 1989. They are pioneers of the hardcore punk scene in Barcelona, as other bands Ultimo Resorte, ShIt S.A., Anti-dogmatikss, L'Odi Social and Subterranean Kids.