Opera at Work

I learned today that one of my coworkers is an opera singer. He was singing up and down the hall today. When I was asking my boss about it she mentioned that he sings when he is stressed. I told her that I think singing is a much better way of relieving stress than some of the other ways my coworkers do it. My only hope is that he sings when he is in a good mood as well. I don't deal with stress very well but I like the idea of singing to try and get through it.