Many countertenors cultivate a five-o’clock shadow, likely to foreclose speculation about their masculinity. With his delicate features and dramatic eyebrows, Valer Sabadus seems to favor that look, and who can blame him? Some seven years ago, as one of five (!) countertenors in an all-male cast of the long-forgotten Leonardo Vinci’s lollapalooza Artaserse, he broke out in hoop skirts and petticoats in the opera’s lone female role. In concert with the Orchestra of the Antipodes, he offers gems of Vivaldi, Hasse, Porpora, and other baroque masters. —M.G.