Erin Bronner of Wilton, far right, joined voice students from across Fairfield County to participate in a master class earlier this month with actress Kelli O’Hara, second from left, at the Performing Arts Conservatory of New Canaan. Critiquing and improving performances, the Tony award-winning actress also shared anecdotes of her profession and personal vocal education experiences with the students. Also participating, from left, were New Canaan students Allison Demers and Tessa Piontkowski.