The initial four a long time in the 1960s has customarily been observed being an period of hiatus for rock and roll.[fifty six] Extra lately some authors[weasel text] have emphasised important innovations and tendencies in this period with out which potential developments would not have been doable.[fifty seven][fifty eight] https://metallica-wall-art11074.bloggosite.com/40900369/not-known-factual-statements-about-classic-rock