Wow, I just thought of a worse one. It didn't happen to me but I worked a lot for the poor soul who experienced it
Before he became an agent, Jerry Samuels was a performer in nursing homes. He was playing a date at a facility he had played before. One of the patients asked him to play "Tennessee Waltz" because, when Jerry had been there, her 90 year old boyfriend had missed the show and she wanted to dance with him. Of course, Jerry agreed and, as he started the song, the happy couple glided around the room. As Jerry went into the bridge, the boyfriend keeled over, dead.
To this day, when I hear that song, I leave the room.