I did not hear the Adhan once in Istanbul. Did that bother me? No way. In fact, if it was up to me, I would make all houses of worship silent. All. If it was up to me, I would...I have to go now. I grew up in a house sandwiched between a mosque and a church, and that drove me crazy. Silence. Wait: I would allow the speaking of tongues though: it amuses me.