Theoretically, as an array is just data and playing is just reading that array. Should I be able to play an audio array twice simultaneously e.g. one start to end, and once end to start, at the same time without them fighting at the middle? I wouldn't want to change the array and play it, but whilst I can test this rather know than guess

@donnerbono Yes, and you can even change the array at the same time, but one action, either the read or the change, will come first and will therefore make things sound differently. It's not obvious to see which will come first, which is a dead horse I've beaten previously

You can even use a single [tabread4~] to play the array twice throw the multichannel support.
Patch from the [tabread4~] help with a small modification: