Greyson Chance7 p.m. Saturday The Vanguard 222 N. Main, Tulsa thevanguardtulsa.com 918-561-6885 $15-$45 YouTube was four years old and Greyson Chance was 12 when his cover of Lady Gaga’s “Paparazzi” blasted its way onto the internet zeitgeist. A student at Edmond’s Cheyenne Middle School, Chance’s performance in front of classmates was fueled by Juilliard-ready piano […]