Rehearsal and Problems!
In the actual concert on live television, the second song, "The Thin Ice" and part of the third song, "Another Brick in the Wall (Part 1)", were disrupted when a circuit breaker tripped. It was reset, but immediately tripped again so they had to rewire some equipment. Those two songs had to be re-recorded for the issue of the videotape. After 'The Thin Ice' was interrupted, the original, live American broadcast of the show said:
they project images on it and everything, so there's a lot of things that have to be re-wound, re-cued...and then they're gonna re-start it and then they're gonna come back to it....You're listening to 'The Wall, Live from Berlin' on the Global Satellite Network.
The live performance of "Mother" was also hounded by a power failure. Roger Waters tried to get Sinéad O'Connor to sing her parts anyway, or mime the song, while the error was being fixed. Offended by being asked to mime, she didn't return after the show to re-record the performance (which is how "The Thin Ice" was saved for the CD/Video release.) Instead, the release version of "Mother" comes from the dress rehearsal on the previous night before the concert. Consequently, the large projection of Gerald Scarfe's mother character that was projected on the screen during the concert cannot be seen on the video or DVD versions.