Trying to pinpoint the Rift of Retro, the date kept shifting back.
Initial thought was circa 1983-84, when postpunk's forward drive entropized and left-field musicians and fans started listening en masse to 1960s records like Byrds and Velvets and Love, the effects audible in the likes of R.E.M. and Smiths and a swarm of jangly groops.
But this initial thought was very quickly adjusted as I remembered glam's pomo-in-all-but-name referentiality.... and then the parallel, overlapping but discrete phenomenon of the early 70s rock'n'roll revival. The huge spate of '50s nostalgia....
But then upon further reflection I realised that started even earlier - as early as 1968 with The Beatles's "Back in the USSR", Zappa's doowop pastiche project Reuben & the Jets. At the start of that year there was talk in the music papers about a return to rock'n'roll basics, and the beginnings of a nostalgia circuit with '50s acts exhumed, many original rock'n'roll greats announcing their first tours of the UK in ages.
Just the other day someone posted on Twitter a Melody Maker article that pushes the date of the Rift back even further - albeit only a few months. It's from September 1967 and reports on an unexpected interest in early rock'n'roll records. The Birmingham record retailer interviewed says that "it started about six months ago". So that further pinpoints the Rift to March '67!
Of course, an interest in older music, nostalgia, these things per se are not really retro as I'd define it. Retro is when a current group spurns the contemporary and makes music that is a remake or a form of attempted time travel. So that would be "Back in the USSR", Reuben & the Jets, and other things of that time like The Move's "Fire Brigade" of February 1968 with its discernible Eddie Cochran flavor (possibly the first retro move made by a major group?).
And probably not too long after that you would get the first of the groups whose wholesale music identity is revivalist - for instance, Shakin' Stevens and the Sunsets formed in 1969.
(Although looking into the odd story of Shakin' Stevens, it seems he never "went back" to rock'n'roll - that was always his only love, he was a fanboy of a 1950s Welsh rock'n'roller called Rockin' Louie! Another tidbit - Shakey's manager was a member of the Communist Party and Shakin and the Sunsets played a fair few benefits for the CP of GB)
