GhostofCain
Ancient Mariner
Because we talked about Bruce changing vocal lines recently:
This was pretty interesting. Not sure what the background for this gig was, if he was sick or something, but for the second half of the first chorus he changes the lines and stays low. So this is essentially a decades old tradition at this point
Edit: Okay, this show is actually fascinating. Go to 7:30-ish onwards to hear altered vocal lines for the prechorus in 2MTM.
I think I'll keep adding stuff to this comment, because it's actually pretty neat hearing a burnt out and possibly sick Bruce (5th night in a row in NYC) navigating such a challenging setlist. From 12:30-ish onwards we have The Trooper, which he sings almost exclusively low. Instead of the constant B4s he centers the melodies around the root note and the D below (which he also does on the "and as we race towards the human wall" on multiple live albums, here he does that for the majority of verses). Funnily enough this would've been a way for Blaze to get consistently and rather easily through this song.
If I remember correctly, they flew back to North America straight after the Rock in Rio gig, Bruce got sick, and they had to cancel a number of gigs at Radio Music Hall. That bootleg is from the last gig (and fifth on five consecutive days at the venue) before the cancellation.