To his credit, Puts, who won the Pulitzer Prize for Music in 2012, imagines Dickinson anew. His song cycle for mezzo-soprano and string trio pulsates with restlessness that only occasionally breaks into reverie. This is not the somber shrinking violet that a high schooler might envision holed up in her 19th-century New England bedroom scrawling away stoically and secreting her poems in a drawer. In Puts’s telling, the famously reclusive poet withdrew from society to thrive, not wither.