matic22
Ancient Mariner
I'm pretty sure they said everyone was in drop D, which was kind of a surprise when the song originally came out. I imagine that even includes Steve, since there was no "we all tuned down, well except for Steve" like there was for Mother of Mercy which was also apparently in drop D for all the guitarists.
Of course in practice Davey and Steve just played in E standard live and it works out fine that way too so obviously they didn't exactly rely on it that much. Considering that, I imagine the gnashing of teeth would've been the guys complaining about needing an extra guitar switch live, which is why we ended up with just Adrian and Janick playing in drop D live.
Mother Of Mercy has the whole guitars tuned a step down, not a drop D tuning.