Some Greek chanters got permission to go into the Hagia Sophia and record a TV special (for Greek TV) of chant music several years ago. While not a service, it

Some Greek chanters got permission to go into the Hagia Sophia and record a TV special (for Greek TV) of chant music several years ago. While not a service, it is the music that would have been used at a service. (Either that, or this is another case of convolution reverb and some clever video editing. I'm not sure. But it sounds pretty cool.) Part of it: https://www.youtube.com/watch?v=e1aUZcHaJb4 https://www.youtube.com/watch?v=e1aUZcHaJb4 Another: https://www.youtube.com/watch?v=-eCZyvczZaM&t=98 https://www.youtube.com/watch?v=-eCZyvczZaM&t=98