The mash up bits aren't the highlights though. It's the tracks that are just remixed.
Especially I AM THE WALRUS. Straight through in stereo for the 1st time ever. Amazing.
I am partial to the legacy version that suddenly drops into mono. I think it was highly effective especially with headphones on. I found it successful in a similar way that the movie "Wizard Of Oz" was in suddenly switching from b&w to color.
The sections from the King Lear play are obviously flown in from the MONO mix. That's why they are mixed so low, so as not to cause too much phasing.
Some massive "Itchycoo Park" level phasing - now that might make it more interesting and psychedelic.