Hair Songs and Lyrics

 Hair, it's part of our bodies but a different kind of body part.  It grows forever or vanishes completely. Sometimes it gets frizzy in the rain.   It can turn colors by itself even without our help.  Other body parts don't do those things (we hope).   How many songs can we come up with that are about or mention hair?  I will start with the obvious, "Hair" from the musical and by the Cowsills.