The Wall is not my favorite Pink Floy album (that would be Meddle) and its concept has always seemed a little abstract to me, even after having seen the film. But it does contain some absolutely classic songs and the prospect of seeing it performed live by Roger Waters was an enticing one.
Of course, Pink Floyd had already toured the album and that show had become legendary for seeing a wall erected between the band and the audience in real time during the first half, only to see it get demolished at the end of the second half. This tour keeps the same basic premise, but technology being so much more advanced the possibilities for updates were limitless.
For instance, the wall itself serves as a giant screen upon which are projected animations, slogans and other media relating to the story. Sometimes the wall will open to show different stages and scenes, like Pink's hotel bedroom.
I have read that a lot of the show is on tape (at least Roger's vocals) and if true, I didn't notice it. The spectacle is absolutely breathtaking and no description can do it justice. The band is great, featuring guitarists GE Smith, formerly of the Saturday Night Live band, and Dave Kilminster who has the unenviable task of playing Gilmour's solo on Comfortably Numb. And that's the one thing that's missing from this show: Gilmour's voice and guitar playing.
Of course, Rick Wright died a few years ago and Dave and Roger are still at odds. Pink Floyd is done. At least both Gilmour and Waters are still active, keeping the legacy alive. This show will no doubt be considered a landmark in the field of live performances. It has to be seen to be believed.