The acoustics of Istanbul’s iconic Hagia Sofia was recorded for the first time simultaneously with eight cameras and voice recorders. 

Turkish musician and singer Emre Yucelen and a volunteer team are behind the recording.

For an acoustics sound test, imam Onder Soy and muezzin Ahmet Toraman worked from a prayer room on the museum grounds and recited the Muslim call to prayer, or adhan, and other sections from the Quran inside the historic museum. A muezzin is the person who makes the call to prayer.

Dubbed the “Eight Wonder of the World” by historians, the 1,500-year-old Hagia Sophia was

Read more: Turkish musician records Hagia Sofia acoustics