httpv://www.youtube.com/watch?v=XzK5YEVMHn4
From the video author:
This choir is from Moscow. They were recorded while they were touring through the Europe. They defiantly are the great bunch with beautiful voices but it looks like this group gathered just for the tour. Nobody saw or heard of them after. I tried to find them and invite for the tour to US but unsuccessfully.
Chesnokov’s “Gabriel Appeared”
Soloist: Chernegov-Nomerov Egor (choral dir.)Чернегов-Ðомеров Егор Глебович
Info from Moscow P.I. Tchaikovsky Music Conservatory