In April, Alyssa Wang, Assistant Conductor of the Boston Ballet, leads Pro Arte in a dramatic journey from darkness to light. The concert opens with Joseph Haydn’s strikingly emotional “La Passione” Symphony, casting moods both stark and stormy. Jennifer Higdon’s intense Viola Concerto is a kaleidoscopic exploration of all the voices in which that instrument can sing. It will feature Pro Arte’s very own principal violist, Anne Black. For the ballet Pulcinella, based on commedia dell’arte, Igor Stravinsky created sunny interpretations of 18th-century Italian music that brim with the composer’s signature wit and charm.