I was an IBM tech at the time. A customer called in with a complex problem. During the course of the call I could hear, in the background, a screeching wail. I tried to ignore it, but it was distracting, and later I began to get worried about what sort of thing was going on there. About five minutes into the call I considered putting the customer on hold and calling the police when the customer asked if I was wondering what the noise in the background was. She said, “I work in an opera school, and that particular student is excessively terrible at singing.” I had to put the customer on hold until I stopped laughing.