When a person is happy, you might hear them humming, singing, or even belting out a tune! What happens if a person is sad or depressed? You might hear songs then, too. Oftentimes, if I’m worried or preoccupied, I will hum. Twenty years ago, my mother passed away and I didn’t realize until weeks later that I had begun humming hymns several weeks before she passed. Then, when my father died I did the same thing and several months after that, my first husband died and I again went through the humming and even singing while…