Abuur nooc ka sii adag weedhan Proto-prog waa muusikada horumarsan ee waxyar ka horeysa xilligii prog-ka ka dib 1969.
Dabcan, nooc ka sii adag weedhan ayaa ah "Proto-prog waa muusikada horumarsan ee waxyar ka horeysa xilligii prog-ka ka dib 1969, xilligii '' progressive rock '' ay ka koobnayd noocyo kala duwan oo qaabab kala duwan leh. "