The Opera Company of Middlebury’s youth program presents the second installment of The Dido & Aeneas Project, featuring all 85 members of the Colchester High School choirs. Since September, these teens have been learning that opera is for everybody — including them. In performing Henry Purcell’s timeless libretto about the mythical founder of Rome and the Carthaginian queen that he left on read (figuratively speaking), these talented youngsters hit notes they thought were out of their range and discover the joys of this ancient art form.