Here’s a cool video: at Vanderbilt University Billy Joel stopped in to do one of his master classes. He wound up letting Michael Pollack, a student and aspiring star, come up on stage and back him on piano on “New York State of Mind.” The kid is from Long Island, and told Billy he’d played with Richie Cannata in the past. Billy does these classes all the time. He’s turned into quite the lecturer/teacher. And this time it really worked out well! This year by the way marks 20 since “River of Dreams,” Billy’s last album. Isn’t it time for something new? Please?