Listen: The Sound Of The Hagia Sophia, More Than 500 Years Ago : NPR
This takes on heightened importance with threat to Hagia Sophia. Cappella Romana is the foremost Byzantine Music Choir in the world, with many different albums and award winning recordings. https://www.npr.org/2020/02/22/808404928/listen-the-sound-of-the-hagia-sophia-more-than-500-years-ago