The recent Disco legend deaths lately has me thinking about that genre....except disco wasn't very popular in the long-haired population where I made my association.
WIKI says disco peaked in the late 70's....back then it was rock all the way....like the 38 Special song I just posted that came out in 1981 and this one from 1978:
Molly Hatchet - Dreams I'll Never SeeFor the record....an early 80's haircut helped me garner employment as a pharmacy manager....shocked my hippie friends

And I took over the store in short order...Yep, back then I knew the price of everything on the shelves....OTC and the liquor....now my memory is not so good anymore.