Before COVID struck, it was the last in-person meet of Saahityikee. Saahityikee is a women-only literature group in Kolkata. In that meeting, members were, in turn, coming to the dias and reading out what they’d written.
Then a lady came, and she sang. I distinctly felt the air in the room change. The air became cleaner. This is not merely an mental-emotional impact I am talking about. The air physically became cleaner. I know because I have experienced that kind of transformation before.
Way back when I was living in Charlotte USA, a friend had come to my apartment. The apartment was somewhat musty. Vacuuming the carpets was overdue. When he experienced the somewhat-unclean mustiness of the apartment, he visited again with an oxygen machine. He plugged the machine into the wall electricity socket. As it ran, it pumped sucked in air, transformed it, and pumped oxygen back out into the air. The air in the apartment became cleaner. That is the way the air became cleaner when that lady sang at Sahityikee.
That is the most potent, beautiful impact of sound I have experienced till now. That is the power harmony has. It can clean air.