Answer:
The theremin is considered to be the first electronic musical instrument ever made, a legendary machine. It is also the only instrument in the world that can be played without needing to be touched! The magnetic field is changed by the varying distances between the two hands.
Explanation:
The Hagia Sophia was a Church Cathedral.
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Then that Roman has no sense or it could be that he is saying hi to somebody or raising his hand to get the bartender's attention
