Cynthia McDermott is tall, tattooed and muscular, and that visual is all the more more striking when you see her on stage with a tiny mandolin, singing her custom mashup of early jazz, hip-hop and contemporary R&B. “I wanted to find a way to make older jazz and swing more relevant to a wider audience and also to myself,” she said. McDermott’s band is the Pimps of Pompe and, before the Coronavirus wiped out every public function, they had a March 31 show planned to celebrate their self-titled