Please excuse the shameless self-promotion, but a piece I wrote about the science of singing came out in Slate today. I worked very hard to convey a lot—the joy, the science—in the most succinct way possible, and okay, I'm proud of the result! http://slate.me/137vHdy
I got this picture from www.shorpy.com. It's an all day community sing in Pie Town, New Mexico, 1940.