Every Noise at Once
The bottom of the page is a little weird. 
"Byzantine" is not Russian Liturgical Music.<p>This is Byzantine Chant: <a href="https://youtu.be/Bs--5yMg1g0" rel="nofollow">https://youtu.be/Bs--5yMg1g0</a><p>Also, Georgian Polyphony did not involve strings as a general rule. There were regional exceptions, but early Slavic polyphony was generally a capella.<p>Here's a good example of Gerogian polyphony: <a href="https://v-s.mobi/elia-lrdei-princeton-georgian-choirs-fall-2011-02:19" rel="nofollow">https://v-s.mobi/elia-lrdei-princeton-georgian-choirs-fall-2...</a><p>Sorry to nitpick, but I hate to see a fascinating corner of music ignored. Happy Listening!