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The disco revisionist canard you hear a lot of (by people sympathetic to Disco Sucks) is that the fad had run its course by that time and what had been compelling, raw dance music made for gay, working-class and black audiences had become inane and overproduced. It's not true
Early disco was by and large the lame end of the movement, with a lot of novelty dance meme songs and a generally very light, civilised, asexual tone (one of disco's main influences being Puerto Rican immigrant dance culture where good girls and boys wouldn't touch or grind)
By the end of the decade, disco is a lot funkier, harder and cooler, with most of the big blousy orchestration replaced with rock instruments and analog synths. It sounds harder and more honest. That was why it suddenly rocketed in popularity and then got cashed in on by everyone
It is worth pointing out that the hatred of disco wasn't, in the memey form, driven by the disco that was actually being made by black and gay people, but by the oversaturation of Saturday Night Fever and its soundtrack (at a time when Travolta was already overexposed)
Disco Demolition Night was absolutely a racist act of violence and intimidation but there are loads of testimonials from organisers and attendees who said they went because they thought the Beegees's squeaky voices were stupid and then realised they'd shown up at a racist riot
One common thread from the anti-Travolta faction was that they'd realise guys were throwing copies of civil-rights-minded soul records into the bonfire and suddenly realise something had gone badly wrong
But also a lot of people in the anti-Travolta faction then go on to say "disco was an annoying fad by that point and needed to be euthenised" which is comforting but a lie. One annoying white suit doesn't annull the legitimately great disco records still being made in 78-80
I think another reason this narrative exists is because it stamps this essentially white rockist concept onto disco in the same way that Joseph Campbell analysed the religions of the world through the programming of European folklore
Rock music went from being very raw and cool (early 60s Mersey) to elaborate and cool (late 60s psych) to overelaborate and uncool (early 70s prog) to raw and cool again (mid 70s punk) and then started the cycle again (punk, post-punk, hair metal, grunge)
But disco didn't start from the bottom part of the cycle, since it largely grew out of the very lush and orchestral Philadelphia music production scene. It became more raw and authentic once moving to New York in the late 70s
That said, after disco was assassinated, it was replaced by the rawest form of dance music yet created - early house, which at that time was based around the philosophy of "the drum break in a disco record is the best part, why not make that the whole track?"
But the point still stands that disco wasn't murdered at its most decadent. Disco was murdered when it was most powerful, where it was winning fans by being good. Disco hate was part hatred of the watered down version sold to white people, part racism and homophobia
