I saw Prine live on stage at an old movie theater, the kind that used to be popular in downtown areas. It was great! Dick, please share your experience.
In answering the original question, and dead opposite of other posts here, the best was Fleetwood Mac, opened by Kenny Loggins. Woulda been around the time Rumours was released. The most disappointing, by FAR, was a Bob Dylan concert. My sister was big into Dylan and whatshername, the socialist Latina, and stood in line overnight for tickets. Best seats I've ever had for the most arrogant, dismissive ahole I've ever listened to. He deliberately offended the crowd, singing familiar lyrics to unfamiliar tunes, and vice versa. ONE TIME he put on his harmonica, strummed his guitar, and played It Ain't Me, Babe as we all remembered it, and the crowd went crazy. That was the only time he did so. To hell with him.
Now I remember, it was Joan Baez.