10-Year-Old Guitar Prodigy Jams on Stage with Ozzy Osbourne Matt Cherette · 08/27/10 11:30AM And the award for coolest kid ever of the day goes to... Yuto Miyazawa, a 10-year-old Japanese guitar prodigy, who was invited on stage by Ozzy Osbourne at a recent Connecticut concert to perform "Crazy Train" with him. Watch inside.