It makes me uncomfortable to hear people sing.
This includes musical numbers in church, family sing-a-longs, the mo-tab, etc. I even vividly remember disliking hearing my own mom sing around the house. Just about every time I hear someone singing I get sort of embarrassed and anxious for it to stop.
Henry cries every time I sing to him. He likes it when I talk to him, but the minute I start singing he starts screaming. Like mother, like son!