You will have to ask someone adept at mixing. When I've tried to do such things if there are more than 3 tracks it just ends up sounding like a hashy mess. Or almost (almost mind you) as bad as a Phil Spector recording. As odd as it seems, I can process each channel as it needs up to 8 channels anyway, and if I pan everything left, right or center it sounds much more distinct. Much better result for listeners. And having multiple tracks in one of those three positions doesn't make them sound on top of each other in a way you would guess would happen.
LCR (Left-Centre-Right) panning isn’t so much a technique as a mindset that can lead you to more satisfying mixes.
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If you ever watch the documentary on Muscle Shoals, and if you haven't you might want to, they show some of the old original equipment used in the 1960s there. The mixing board didn't have pan pots. It had 3 way switches. Each switch was Left, Center or Right. Some were 3 way flip switches and some were 3 way rotary switches.
Universal Audio 610 Vacuum tube mixing board. See how each channel in the board has a switch, labeled L(eft), M(iddle) and R(ight).
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