[cowmoo728]

One time I was sitting in the New York metropolitan opera and heard Javier Camarena give an encore performance, which is quite rare. Immediately after the encore, it went to intermission. Once I walked out to the lobby, I checked his Wikipedia article on my phone and it had already been updated to note that he had just done an encore performance at the Met. It was insane how fast it was.

[prox]

So likely an editor was in the room?

[stackbutterflow]

Or the singer himself or one of his agent did it.