Hello Mark and welcome to the Cow Audio Forum.
Bruce and Richard have given you chapter and verse on how to get the best audio.
I will only add that I would get them up there singing during rehearsal and while listening on good headphones like the Sony MDR7506 or Audio-Technica ATH-M50 (or later), move the mics until you hear something you like. If they are three deep, even if they’re all flat on the floor, I’d go higher with the mics and aim them down a bit.
If they are being conducted, try behind and above the head of the conductor, because he/she will be directing them to sing until they hit his/her happy spot. I did have a problem in a church once because the conductor was on a squeaky floor board. Every time he moved a certain way, you could hear the floor squeak. The mics above and behind his head picked the squeaks up very nicely. ☺
Be aware of tempo. Slower tunes will allow you to pull the mics a bit farther away and allow the (hopefully) good room ring richen things. Faster tunes may sound sloppy with that position and will require you to move mis closer to hear less room. I usually sweeten in post with reverb, so I’m good with not hearing quite so much room during recording. I use two reverbs, one set for early reflections and one for late. I blend the returns to get whatever my brain thinks is right.
Regards,
Ty Ford
Cow Audio Forum Leader
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