I want to know the answer to the following question:
When did releasing music indepentently really hit popularity?
All the background I'm provided with is that "By 1977, groups began pointedly pursuing methods of releasing music independently , an idea disseminated in particular by the Buzzcocks' release of their Spiral Scratch EP on their own label as well as the self-released 1977 singles of Desperate Bicycles.". Is that enough to answer the question?