For animals, food and water are enough to sustain life. But as humans we are burdened with the knowledge that we will die someday and so just surviving isn't enough to sustain life—we need meaning. Music being a part of a well-balanced meaning diet seems to be a universal need across all of our cultures. I'm glad!
I love that the great apes sing songs about food.
It's weird that dogs can't dance to a rhythm but birds seem to.