A friend who also received a promo copy share his thoughts quickly about the live recording:
“KASHMIR - There was only on Robert Plant.
GATES OF BABYLON - Lacks balls and JSS's voice is straining.
DREAM ON - Decent rendition, again JSS's voice is not at its best
DIARY OF A MADMAN - Decent, the "Ah, ah" at the end is cringeworthy
COMFORTABLY NUMB - My respect to Ron Thal as a guitar player, but the fast picking in the solo is ABSOLUTELY unnecessary. That is NOT something you do for this song. This song is all about feeling, not about showing off. Fortunately the fast section is not that long.
SHOW MUST GO ON - Best of them all, JSS far from his best and the mix (and this affects all of them is weird). JSS is too up-front, the band's sound is a little subdued and "restrained" which should have been the opposite considering there was a symphonic orchestra as well
AND THE CRADLE WILL ROCK - JSS sings the best in this one, but the mix is equally awful, the sound of the band playing in a second plane”
I guess he is more articulated than me, but si do agree with him about this.