How can I record two singers in one take in the same room with minimum spill? I was thinking of two cardioids @ 180º with 2m separation. I wonder though, with reflections and all what the spill will be. Any improvements to be made on this? We have only one live room, no separate vocal booth. Only solid baffles, no windows. A jazz band asked me if they can do the vocal parts this way. It is easier for them to get the timing right. I understand their point, but I wonder how to realize that in a good manner.