Pink Floyd - Games For May (1967) 12th May 1967, Queen Elizabeth Hall in London
The band played for a full two hours that night where Syd Barrett is at the peak of power.
It was also the first surround-sound rock concert ever.
andrewskyDE make excellent topic over
http://forums.stevehoffman.tv/threads/p ... 67.670652/
Much later, rumours went round that the concert was taped via professional (multitrack) recording devices by EMI, but Peter Jenner denied this.
Though some visitors believed to have seen recording machines at the venue, no true evidence ever came up.
I was hoping for it while the Floyd's Early Years campaign came up but sadly nothing was mentioned about that.