Grab-n-Stash said:
Does anyone know if there's a music term when there's an instrument playing a higher pitch on one side (Like the left or right side of my earphones for example) and lower pitch on the other? I've noticed this for years now in songs and video game music, but didn't know if there was a name for the technique.

As @Kemonophonic: says the mixing side of it is called panning. The musical side of it depends on the notes, if they are both the same note but at different registers (ie: I and VIII) it's just called "playing octaves" but if the notes are different (ie: I and iii) it's called "Harmonising".

DragonFox69 said:
As @Kemonophonic: says the mixing side of it is called panning. The musical side of it depends on the notes, if they are both the same note but at different registers (ie: I and VIII) it's just called "playing octaves" but if the notes are different (ie: I and iii) it's called "Harmonising".

Yeah, that's it. Harmonising was the word I was looking for. I thought there was something more to it than just the panning.