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Greta Van Fleet can come across like a “Saturday Night Live” skit.

Watching these ‘70s classic rock revivalists in concert, parading about in tight pants and cranking out wannabe Led Zeppelin numbers, and you half expect that Will Ferrell is going to join them onstage.

More cowbell, anyone?

Of course, the band’s over-the-top dedication to the long-ago era, when every song needed a guitar solo, and the really special ones warranted two, is what has drawn so much attention.

Being a real-deal rock band in 2018, as sad as it is to say, is quite a novelty.

And, like most novelties, this one proved quite fleeting as Greta Van Fleet performed a short, yet still quite tedious set at the Fox Theater in Oakland on Sept. 17.

The quartet’s classic-rock shtick was appealing for about 10 minutes, as fans marveled over vocalist Josh Kiszka’s Robert Plant-like howls and brother Jake Kiszka’s blistering guitar work.

But then it quickly became obvious that the songs were just repetitive, unremarkable blues-rock jams that never really went anywhere, despite some solid playing from the four musicians. The tunes simply came and went — and usually not fast enough when it comes to the latter — without leaving much of a mark.

Songcraft, it’s safe to say, isn’t one of Greta Van Fleet’s strong points.

But, then again, neither is buttoning their shirts.

Indeed, I’m pretty sure that none of the guys know what buttons are actually used for on shirts.

Add in some tight gold pants, colorful scarves and dangling medallions and, well, see my note up top about the “Saturday Night Live” skit.

The stereotypical ‘70s rocker look, which appears to be borrowed right out of the pages of a legendary music magazine like Hit Parader, Creem and Circus, is all in good fun. And Greta Van Fleet’s main mission, besides igniting a rush on aerosol hairspray at drug stores across America, seems to be to put the fun back in rock, something that has been steadily drained by the Death Cab for Cuties of the world over the years.

Classes rock from Frankenmuth pic.twitter.com/uJ3dvhfZXq — Jim Harrington (@jimthecritic) September 18, 2018

It’s definitely working for the band, at least on a marketing level.

Without so much as releasing a full-length debut album yet, the group was still able to nab gigs for three consecutive nights at three major venues around the Bay Area. Following the Fox show, Greta Van Fleet was set to perform Sept. 18 at the City National Civic in San Jose (8 p.m.; $39.50, www.axs.com) and Sept. 19 at the Masonic in San Francisco (8 p.m.; $39.50-$49.50, www.livenation.com).

Dorothy, the cool Los Angeles-based blues-rock act fronted by Dorothy Martin, is the opener for the entire Bay Area stand.

While songwriting is Greta Van Fleet’s greatest hurdle — something that the concert presented no evidence that band is on its way to clearing anytime soon — it certainly isn’t the only one.

Another glaring weakness is lead singer Josh Kiszka, who fails to complement his rock star vocals with rock star moves and stage presence. Instead, he’s quite stiff, somewhat awkward and has no knack for commanding the crowd.

Not coincidentally, the audience — which was so into the music at the start of the show — seemed to grow less invested with the performance as the night went on.

If Greta Van Fleet is rock’s big hope, as some hold the band up to be, then rock is in big trouble.