Popular Music is rarely critically appreciated in its time.
I learned that in my teens in
1974. A Billboard article bemoaned the state of current Top 40 and how nobody would remember such disposable music, and the 60's was better, blah, blah, blah.
Funny how much of the music being bemoaned at the time is now staple for Oldies and Classic Rock formats.
Rolling Stone is legendary for taking the better part of a decade to "get" Led Zeppelin.
Who were they into?
Crosby, Stills & Nash (& Young). To Rolling Stone, CS&N/CSN&Y walked on water. I've always been a fan...but what made them so superior to, say, Chicago? Or the Stones, or Blood, Sweat & Tears, or...well you get the picture.
Anyway I started to take the criticism of current Pop Music with a grain of salt. What sucks this year...may well be in a Top 100 all-time list in a decade or two.
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Back in my 30's...I transitioned from being a Pop to Country radio personality (where I have proudly - and thankfully - remained to this very day). It was 1989. The imagination and diversity of Country Music was Nashville's equivalent of listening to 'KB circa 1971. I paid less and less attention to Top 40 until I was paying virtually no attention at all. I figured I was growing older and my tastes were changing because I didn't like what I was hearing when occasionally exposed to Top 40.
But at the beginning of 1995, I happened across VH1 and there was Des'ree singing "You Gotta Be", R.E.M.'s "Bang & Blame" and Hootie & The Blowfish's "Hold My Hand".
Wait a minute...I thought all African-American musicians had gone R&B/Rap? (Yes, I'd missed Living Colour)
Shades of Prince & The Revolution! Shades of the 60's!
And just like that, I was following the Pop Top 40 again, and continued keeping an ear on it to the present. And I learned what Grunge was all about...why Kurt Cobain's death mattered...and why do certain tracks on
Nevermind remind me of the Beatles, anyway? It doesn't sound like the Beatles...but I later learned Nirvana was heavily influenced by the Fab Four. "Something In The Way" was Cobain's trying to channel John Lennon.
So I spent part of 1995 discovering what I'd missed between 1990-1994...and I came to understand my tastes hadn't really changed. But the music sure had - multiple times. And excepting Grunge and Alternative...I didn't like it. Light Pop...Light Rap...Light Metal (pre-Grunge)...too lightweight for my tastes. Once the 1992-99 (Grunge to Pop Alternative) era kicked in, much of that music reminded me of the '60's and early '70's. I figure one day that decade will find the redemption it deserves but it has yet to completely happen the way Disco and Hair Bands have found their redemption.
And if there was ever one style of music I thought was d-e-a-d and deservedly gone, never ever to return...Disco was it.
Yet...
Donna Summer's death made me revisit the era and I discovered my issue was not individual songs - but the oversaturation of the genre ('KB played Disco songs by Tanya Tucker and even Dolly Parton!) combined with a heavy dose of the "Disco is the new Pop Music and Rock is dead!" attitude...and it's a wonder Steve Dahl's Disco Demolition wasn't more visceral than it was. But it was the first time in the Rock era that one legitimate Pop musical style drew battle lines against another.
Before this, AOR's playing Stevie Wonder, Marvin Gaye and even the Bee Gees weren't uncommon.
It's a shame it turned out the way it did because listening to Donna Summer's work now reveals a great diversity...and a true pioneer. I was so burned out on Disco back in the day that I couldn't appreciate until much later how well Bad Girls had integrated Rock elements into Disco music. (Unlike the Stones' "Miss You", a Rock song with a Disco beat)
Bottom line here is...the end of the 70's and the early 90's (also 2/3/59-2/9/64) are recognized as doldrum periods for Top 40, so and shouldn't be confused with how our individual tastes may evolve as we age.
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All that said...the adage in the book of Ecclesiastes has never held so true...There Is Nothing New Under The Sun.
So no surprise to read your assessment that it sounds pretty much the same across the decades. Some of it may be the way you perceive it as you get older...but I think most of it is the fact that much of today's Turbo Pop taps previous decades of musical styles. Some of it channels directly back to a previous time ("Moves Like Jagger", anyone?), for others, it's nuance...maybe a lyric here or an arrangement there. I think this is part of the appeal of Adele.
The big difference today is that Mainstream Rock, fresh out of fresh ideas, has run its course. Other current variations of Rock have their loyal albeit small followings amongst the backwaters of Pop Culture where Jazz and Classical have resided for decades. There will be some great music made in these backwaters - but mainstream crossover will be limited and sporadic. Interest in Classic Rock remains high...even younger people seem to have their faves. Many of today's Country artists are making new music that sounds like Classic Rock with a twang. Eric Church's "Homeboy" is the most blatant example.
http://www.youtube.com/watch?v=wx-dUsh6OT8
The 60's with its musical diversity were sheer magic. But IMO there's some great stuff happening today. It's different...yet it's the same.
Sorry such a long rambling reply...