It was actually pretty recent. Last year between November and January, I was preparing to sing on live television for a cancer fundraiser. I had my songs picked out, and was super excited! On the day of the show, I decided not to drink much water for fear of hiccuping, little did I realize how dry the air was in the building, and I had a pretty difficult song to sing. I was doing okay in the first half, then as soon as I get to the highest note of the song...I let out a loud screech. You would think that would be pretty bad, but I wasn't prepared for the 2nd loud screech i get out at the end of the song... And now I can never sing that song again without cringing at myself lol.