Worst Concerts You Have Attended ??

I just left a remark about a favorite band of mine back in the day - April Wine - that I saw in concert and was disappointed. Could have been that it was an off night for them, or maybe they were never good in concert. Maybe the lead guitarist had too much to drink? April Wine was not the worst, however. I remember Neil Young in the 1990's who was on his one-man acoustic show type of tour that many artists were taking advantage of (perhaps for financial reasons) during that time. While a friend of I had near front row seats at Desert Sky Pavilion (now Ak-Chin) in Pheonix, the crowd was just roused up into a frenzy by the warm-up band (James) and here comes Neil and his guitar/harmonica. Wow, what a sonic letdown. I remember getting up and leaving and feeling Neil's glaring eyes on us as we ushered out. I think, to this day, he probably still remembers me. We all can remember the great live concerts we attended, but what were the worst and why?
Not a concert, a musical play: Les Miserables, a show by the touring (not Broadway) company at West Point's Eisenhower Theater. I suspected it would be bad music, but went because we were with another couple who professed great anticipation of this musical. 

It was a very well produced, sung, and acted show--but the music, at least to my ears, was spectacularly bad. No redeeming features & not a single memorable note of music. I slunk down in my chair and thought about anything but that show.

Actually was rather shocked to find at intermission that my wife and the other couple absolutely shared my opinion (that rarely happens). We left immediately and went out drinking. 
A few different acts at New Orleans Jazz & Heritage Festival over the years.  Bonnie Raitt with a completely shot voice, with the backup singers constantly jumping in mid verse to try and bail her out; Eric Clapton totally mailing it in after receiving the highest appearance fee given to any musician to perform there; and Macy Gray singing with Galactic and being so f***ed up they sent her back to her trailer and had one of the backup singers finish the set. 
Atlanta Pop Festival, July 4th & 5th 1969...the music and bands were good, but it was over 100 degrees on both days. Held at the Atlanta International Raceway (NASCAR venue) on the infield and the heat from the huge racetrack baked the crowd. Firetrucks were called in to spray as many people as possible due to the number that were passing out. I had spent the summer working construction, so it didn't bother me to that extent.
True addendum to the Atlanta Pop Festival posting....I went with several friends, one of whom had been burned a few weeks earlier when he gave someone $20 for a bag of weed. The guy disappeared into a house and never showed back up. At the concert, we all went back to the car for some special refreshments  and when we returned to our blankets, the same dude was sitting on one of them. We escorted him back in the direction of our car, but at the gate, he started yelling for help. We melted into the crowd and he was ultimately arrested on an outstanding warrant. How's that for karma?
1) Journey without Steve Perry. Neal Schon's continuous solos were ego-induced and totally unnecessary. The vocals were like bad karaoke.

2) Duran Duran in 2019. They came out two hours late and were totally lifeless.