As a backstage dresser for New York’s Metropolitan Opera singers, Chelsey Hill (illustratingdiva), knows a thing or two about thriving amid chaos. Her job duties truly run the garment — dressing as many as 20 singers at a time, sewing basic repairs, managing multiple costume changes per show and multiple productions per day. For one show, she assisted a fuel-soaked fire dancer. For another, she hung out with a python. The Met — the largest classical music organization in North America — had to cancel its 2020-21 season because of the pandemic, but this fall the show goes on, and Hill returns to the dressing room. When the metopera shut down last year, most of Hill’s income went with it. Fortunately, she also happens to be a very talented illustrator. During the pandemic, her number of illustration gigs tripled. She’s done work for such artists and organizations as the Met Opera Chorus Artists, Lara Downes and the Boulanger Initiative, for which she illustrated the Women Composers Al...