For years I played in a heavy band and for years before that I listened to heavy music. I always took it as a given that tightly tracked hard panned rhythm guitars are how things are done. When did this start though? Just off the top of my head, I’m sure Boston used this technique back in the mid 70’s. Same for AC/DC. What I’d imagine, but I do not have proper source for, is that bands like Thin Lizzy or the Scorpions, or Judas Priest or Iron Maiden did this too (love all those bands but I don’t often listen to their early catalog).
To be clear I’m talking about the technique used in recordings when a separate but identically performed (as close to humanly possible, of course) is performed. I think I’ve read Tony Iommi would have things doubled by just shifting the same take slightly off a few ms and that sort of gave us the doubled sound. I don’t care about that, and I also don’t care about R/L “complimentary” tracks, unless we can identify these as a precedent that slowly evolved into the recording technique I’m asking about.
TL; DR;
I’m interested in who the pioneer was that decided it sounded cool and heavy to hard pan 2 takes that sounded “the same”. Does anyone know? I know we’ve got plenty of hard rock historians here