https://www.nytimes.com/2013/06/30/arts/music/wearing-a-wire-at-the-opera-secretly-of-course.html https://www.nytimes.com/2013/06/30/arts/music/wearing-a-wire..

https://www.nytimes.com/2013/06/30/arts/music/wearing-a-wire-at-the-opera-secretly-of-course.html https://www.nytimes.com/2013/06/30/arts/music/wearing-a-wire... Microphones are still not used by purists in opera or classical music, exactly because of the point I made above.