Nikolai Kachanov, the director of the Russian Chamber Chorus of New York, wrote these amazing pieces. We recorded them nigh on 6 years ago.
All the vocal performances were done (as far as I remember) at the Interfaith Center up near Columbia University. It was a while ago, so I don't exactly remember. I'm going to guess that we were using Neve 1272 preamps with AKG 460 mics with CK1 capsules. But we may have been using Rode NT1 large diaphragm microphones. Or a mix of those. I vaguely recall recording straight into Samplitude through an Apogee converter.
The music is brilliant. Check it out. Buy the CD.