Lynn Massa may forget a lot of things, but he never forgets how to play the harmonica. “I have to check to make sure my head’s still screwed on sometimes,” he joked, “but I can always play a tune.” ...

Nandu Belvalkar and his students set the tune at his classes While most musical instruments require time and effort to learn, the rudimentary harmonica (mouth organ) is an easy pick-me-up plaything ...