Here we have a set of znamenny chants sung in Church Slavonic by the Choir of the Brotherhood of Valaam Monastery. Enjoy and I need a better catchphrase.

https://archive.org/details/01BeholdTheBridegroomComesAtMidnight

Thank You for this one, Chronos X - Sounds great :)

Thank You for this one, Chronos X - Sounds great :)

Good to know, especially when I split and converted the songs into mp3's from a YouTube video.

thanks Chronos

New links added.

Thanks -now that's some nice chanting.