William Congreve wrote, "Music has charms to soothe the savage breast." I'd add a corollary: "Playing music soothes the entire body." Many people take music lessons and find that it increases stress.

A 5-year-old has figured out how to play Led Zeppelin's "Stairway to Heaven" by ear, but those who've followed him online know this is no ordinary kid just learning to play guitar. Watch the ...