Vaenyr
Ancient Mariner
The Gelsenkirchen, Germany show. Here:When? In wich show
The quiet part starts at 4:25. The first two repetitions go well. The first is the one where the least is happening, the second has Bruce narrating the "today is born the seventh one" part.
From 6:28 starts the third repetition. Here is where the problems start. Listen to the drums, the bass drum in particular. There is one bass drum hit, then he skips one and after that he hits them in the off-beat part (as it should, the skipping was the first mistake). You can see Steve and Adrian turning around a few times to try and communicate with Simon through eyesight.
At 7:21 is when Adrian plays the wrong chord. He laughed about it (I was standing on his side of the stage and could see it) and in the video you can see how he bends over to laugh about it (and probably a tiny bit of embarassment

Around 7:47 starts the final part and you can hear how the various members have timing issues, with Adrian starting his distorted guitar a couple of seconds later than the rest. Finally around 9:02 this section is over and the transition is a bit rough as well. Once they caught themselves it was smooth sailing and the rest of the song was phenomenal. But for whatever reason they had quite a bit of trouble with this quiet section.