So I'm finally getting around to listening to this cd...from what i can tell it sounds like there are a ton of digital edits, and fixes. Some of the stuff came from the Escape tour, and a few from the Frontiers tour. Surprisingly, the mix on the Frontiers stuff sounds pretty good (much better than the boots I've heard from Oklahoma, Japan, and 'FILLADELPHA!!', particularly the overly gated drum sounds...) but according to the liner notes, some of these shows were used...hence the boots must simply be a rough or dirty mix...
In any event, upon further examination, on many of the songs Perry can be heard referencing "Houston" - But they are not from the show that ended up becoming the DVD (The exception here is Wheel in the Sky, which is from this show, but with severe edits). I'm wondering if perhaps these are from the same performance that "Party's Over" came from, on the DVD. If so, I have the sneaky suspicion we may have upwards of 5 tracks from this show (Perry references houston about 4 times on this CD).
If anyone knows for sure...that would be cool. I'm sure this has been discussed somewhere before - but then I'm always catching up.
cheers