No way, could this be it?

Talking about a millsage song Left channel is Natsume, right channel is Nagi...?? I thought the sound was placed based on the front-facing perspective, but maybe that's not the case (I listened to the chorus part for a final judgment, but it blends in too well as a chorus, and I can't tell which is which, so it might be a complete misunderstanding) What we can say from this Perhaps millsage's songs are 'The sound heard from the Key/Vo's perspective'......