It's been said that our young people are the hope of our future. If that's true, the future of classical music looks blazingly bright, judging from these extraordinary performances by the young musicians in this triple-play Tiny Desk (home) concert. Teenagers from three locales around the country – Chicago, St. Louis and Palo Alto, Calif. – invite us into their homes for fresh takes on vintage classics, contemporary sounds and sophisticated pop arrangements. They are all alums of From the Top, the radio program (distributed by NPR) that spotlights today's terrific young players.