Mar 15, 2019  · It’s the third day of January’s polar vortex, and the 22-year-old violinist is just starting to bounce back from a brief but gnarly bout of winter crud. Yesterday, the coldest day in a generation, she had no voice at all, and her new employer, the Minnesota Orchestra, nearly pulled the plug on. A young “conducting wizard” and former drummer in a rock band is taking the helm…