This can be quite common.
The Band’s reunion tour was a bad mistake. They were awful. Didn’t appear to be anyone who could hold a tune or keep in time.
Walked out on the Mavericks who were no better than your average pub band.
This upset my wife who was enjoying standing next to Nick Lowe, who is always worth the price of a ticket.
Supertramp reunion. Dreadful racket, again terrible vocals.
Steve Earle used to be excellent but is now, and has been for a number of years, boring as feck. Far too much politics, and that stupid beard.
Conversely I have never been disappointed by US country artists. And a rare appearance of Jimmy Buffet in London several years ago was outstanding.
The large number of phone videos of the show that appeared on YouTube the following morning confirmed just how good it was. Rare when you consider how often you enjoy a live show, and then see a video of it and realise how God awful it was.
U2 at Glastonbury case in point. The crowd loved it but the TV relay showed how bad they need a good singer. Flat as a fart is the expression that came to mind.