When Cora Dunham first walked onstage for her clinic at the Chicago Custom Drum Show wearing stiletto heels, I heard a few snide remarks from the audience questioning how she could possibly work the pedals. Then she took off her shoes and brought down the house. Despite fighting an in-ear monitor that just didn’t want to stay put, Dunham smoothly improvised over a 7/8 ostinato, alternately grooving and ripping through Cobham-esque fills, all while playing flawlessly over bars lines then landing right back on the pulse. The crowd went nuts as soon as she played her last flourish. You can see why.