Ten thousand thanks to my friend and BoomerGirl reader, KJ, for sharing this joyful video on her Facebook page. (It's such an authentically delightful moment; it really made my day.) In it, Paul Simon gives a fan the thrill of a lifetime when he invites her on stage to sing the song that introduced her to the guitar. In almost every concert I attended throughout my life - up to and including last year's Carole King/James Taylor show - I've wished the same thing would happen. Except, in my fantasy, I'm playing the tambourine a la Betty in The Archies.