Thought about this when I saw my university is having the Beach Boys. I obviously freaked out because the beach boys are HUGGEEEE and it’s not often the guys get together to do shows. I knew there had to be a catch. There was.
The only real “beach boys” playing were Bruce Johnston and mike love. None of the Wilsons will be there.
I’ve always thought that Yes without Jon Anderson was a dubious proposition, but their upcoming tour will be their first time performing with with NO original members. (Steve Howe and Alan White remain from the classic '70s lineup, but neither is a founding member.)
Of the original line-up of Deep Purple, only Ian Paice is left; of the better-known MkII lineup, however, they still have Ian Gillan and Roger Glover as well: Blackmore was shed long ago and Jon Lord sadly died a couple of years ago.
Lynyrd Skynyrd has been pretty much a cover band for the original group since 1977.
Well, two of them do have a good excuse. 
20+ years ago, a group of us went to see The Association - most of the band members that night weren’t out of diapers when the original group performed!
In college, I saw 1/3 of the original Kingston Trio perform with a couple of other guys. The sound was not quite the same…
A couple of years ago, my sister and I went to see Paul Revere and the Raiders. It was the original Paul (R.I.P.) but that was it.
I took my daughter to see 3/4 of the Monkees - at least they didn’t add a substitute Mike. The three just performed with a backup band.
A local venue features bands from my youth for their summer concert series. I’ve never attended, but I’m pretty sure it’s a similar situation - one or two geezers with a bunch of kids.
Renaissance, if you ever saw them with Annie Halsam.
Fleetwood Mac after around May 1970.
Agreed. My fave band to this day. Now that Original Bassist Chris Squire is undergoing treatment for a rare form of Leukemia, they are more of a cover band than ever.
When they fired Jon Anderson because of his inability to start a tour due to throat issues, they gutted the band. The problem with having a band that’s half “real” members and half cover band members is that you can put together people who can hit all of the notes.
If music were nothing more than hitting the right notes in the right order, nobody would listen. Nobody would be moved or inspired.
Music should engage in non-intellectual ways. Be it Mozart’s Requiem or Talking Heads’ Burning Down The House, I am always engaged by music.
This stuff is Retirement Fund Touring. Screwed over by meager contracts in their heyday, many bands- like YES - tour now to try to make up for the lost grosses.
Quite sad. 
Guns N’ Roses these days is just Axl Rose, his issues, and a bunch of hired goons.
Journey simply isn’t Journey without Steve Perry. Yeah, he technically wasn’t an “original” member but he really made the band what it was.
Styx without Dennis DeYoung (or the Panozzo twins, for that matter.)
Genesis thankfully packed it in after one disastrous album & tour without Phil Collins.
The Guess Who. No Randy Bachman or Burton Cummings, just a half-assed line-up with the two least important original members, who screwed over Burton and Randy. See Burton if he tours near you, awesome show.
Foreigner only has Mick Jones left from the original line-up and due to health problems, he has missed numerous performances…
–Wikipedia
The Band of Theseus?
Little River Band: no original members, no later members who played on their hits. No one, in fact, who had anything to do with their popularity.
Pete Townshend has described the current touring lineup of The Who as "the world’s most expensive Who cover band.”
By looking at the personnel page, I don’t think the current incarnation of the Glenn Miller Orchestra contains any original members.
And yes, they still tour. They’ll be playing the world famous (?) Derby Dinner Playhouse in picturesque Clarksville Indiana on June 8. Say, that’s tomorrow! I wonder if tickets are still available?
If you go to see a band called War, all you’re going to get is keyboardist Lonnie Jordan, the one original member who stuck with the sleazy manager who owns the name. The real War, with the other four surviving originals, plays under the name Lowrider Band.
Relatively recent thread: How bad is Styx without Dennis DeYoung?
I actually went to a Yes show last summer with the Anderson fill-in. It was a surprisingly good show. The kid did a good job.
But seeing Howe, Squire and White on stage, how could it not be?
Don’t start, you.
up_the_junction - you either!
The case could really be made that the most famous incarnation of the group is really a separate entity, despite the same name and some continuing members. Keith Relf may have founded Renaissance, but it went absolutely nowhere. It wasn’t until there was a complete lineup change that they went…well, down the block a bit. Ditto Fleetwood Mac. And I say this despite being a fan of the original-ish lineup and having seen them often over the years.