Debating what constitutes authenticity is a nice way to chase your tail, but is a fun way to pass the time when there's nothing else making demands on your time. It's not a waste of time, since it is a way for us to define and articulate What Matters in life beyond our bond with the Banks and the Legal System. It is what makes life a pleasure, and a large part of that pleasure is maintaining the capacity to be pleasantly surprised.I've preferred to remain an agnostic in matters of musical taste; pragmatic might be a better word. Or perhaps my tastes merely change with time. In any event, I tend to think that anyone committed to trying to make a living playing music and performing, activities from which there are no guarantees of financial security (or even an audience) can't help but be sincere. One might disike the motive or the personality, but the emotion is authentic enough. Better to consider whether the music is at least honest, or better yet, if it's done well: whether music , lyrics, voice, style work on their own terms, makes for a more interesting set of topics, and a more compelling record collection. What those terms turn out to be might be , at first, seemingly unacceptable or contrary to everything you held as essential to quality. But to paraphrase a famous line contextualizing Modern Art, most original art forms seem at first ugly and horrible; they emerge ahead of the curve and the rest of the culture has to catch up. Not everything gets past the finish line,though, as a review of your record collection reveals. I'd wager we all have many albums from bands and artists we thought were heavy and groovy back in the day that now make us scratch what's left of our hairline, wondering what we were thinking.
It was after I slid into my forties where the other songs and albums by Zeppelin reemerged on my radar and revealed a band that was more diverse , musically, than the popular invective allows. Where I lived at the time, Zeppelin fans were just as likely to be listening to the Band, Van Morrison and CS&N, along with other folk "sissy" artists as they were the macho sounds of hard rock. Like the Beatles, or Steely Dan, Led Zeppelin were studio artists, where the studio was the proverbial third instrument. Live, they were one of the worst bands I've ever seen--though they sounded pretty damned good when I saw them in '67 (?) on their first US tour with Jethro Tull--but in the studio , their music was finessed and honed, typical in those days. For all his faults as a faulty technician in live circumstances, he is a producer who brought a fresh ear to the recording process, and came up with ideas that circumvented the routine dullness and rigor that's become the bane of less able hard rock and metal bands after his Zeppelin's break up.
The only real bad after shock of " Sgt Pepper's" and other "concept albums" from the period was the mistaken notion by other artists that there had to be one grandiose and grandiloquent theme running through out both sides of their albums in order for the their work to be current with the mood of the art rock of the period. The Beatles succeeded with "Sgt.Pepper", "Magical Mystery Tour", and, and "Abbey Road" ( easily their most consistent set of material, I think) because they never abandoned the idea that the album needs to be a collection of good songs that sound good in a set: over lapping themes, lyrically, are absent in the Beatles work, unless you consider the reprise of the the Pepper theme song on a leitmotif of any real significance (it's use was cosmetic), although musical ideas did give the feel of conceptual unity track to track, album to album. Lennon and McCartney and Harrison's greatest contribution to rock music was their dedication to having each one of their songs be the best they could do before slating it for album release. For other bands, the stabs at concept albums were routinely disastrous, witnessed by the Stones attempt to best their competitors with the regrettable 'Satanic Majesties Requests". The Who with "Tommy" and "Who's Next" and the Kinks , best of all, with "Lola", "Muswell Hillbillies" and "Village Green" , both were rare, if visible exceptions to the rule. "Revolver" and "Yesterday and Today" are amazing song collections, united by grand ideas or not. I buy albums , finally, on the hope that the music is good,the songs are good, not the ideas confirm or critique the Western Tradition.