HooRU
It seems that there are lots of “formula” music across the spectrum.
What’s now grouped as ‘country and western’ was once two separate genres, with music based in the roots of Appalachia, blue ridge, Kentucky and Tennessee hills and mountains. Western based in Kansas Oklahoma, texas and West to old California. I enjoy the music from the days of Bob Wills, Hank Willians, Ernest Tubb, Les Paul, the outlaws and some of the ballads of Garth Brooks and similar.
With the exception of bluegrass, the current music seems little more than a combination of rap and metal.
For Jazz, the Playboy era had greats like Errol Garner, Oscar Peterson, early Miles Davis. John Coltrane. Sarah Vaughn, Billie Holiday, Chet Baker and back to Josephine Baker and the antics of Moms Mably.
And Doo Wop. Still great after all these years.
Maybe some of the above are/were ‘formula’ but they were listenable and mostly enjoyable and understandable.
I wonder just how good Taylor Swift et. al. would be if limited to an acoustic quintet and nothing else for backup. Lady Gaga can pull it off.