Today, July 24th, marks the beginning of islamic services in Hagia Sophia again. A tragedy for Christians, demonic worship in the house of Christ, and the beginning of the end of the reign of Islamist rule in Turkey.
No islamic chant can match the beauty of the Christian voices raising glory to God in the sanctified space which was built for it.
Enjoy this, from Cappella Romana, sample of what it sounds like when Christian worship hymnography is sung in Hagia Sophia.