The sixties were when popular music transitioned from AM to FM. Remember when FM was a big deal? Most radio recievers were AM only. FM receivers were a lot more expensive than AM and most FM programming was “long hair”, meaning classical, since the kind of people who owned FM recievers in the 1950’s were the kind of people who own Bose Wave receivers today, older and more prosperous. Technology made FM receivers competitive with AM and rock migrated to the FM band.
” The sixties were when popular music transitioned from AM to FM “
Also when MoTown was replaced by the Beatles, then the electric generation .... Hendrix, Led Zep, followed by Dylan going electric, and groups like Buffalo Springfield launching the careers of CSN & Y , and many other soundalikes..........