Noche Flamenca delivers, year after year. To be specific, the soul-baring of the lead dancer, Soledad Barrio, the troupe’s reason for being, is always searing and always unostentatiously so. The musicians—on guitar and cajón, with keening voice— have been working alongside Barrio for long enough that together they serve as a single finely-tuned instrument of feeling. Director Martin Santangelo’s staging is so elegant that the dancing doesn’t seem staged at all but simply to unfold—solos after duos after trios, with raucous ensemble numbers to start things out and finish them off. And this year, even the premiere looks a bit familiar. Irrationalities continues where the critically acclaimed Searching for Goya, of a couple years ago, left off—with the Spaniard’s art, this time the disturbing series of etchings Human Follies (Los Disparates). For certain scenes, the dancers don Expressionist masks made by the renowned contemporary artist Mary Frank. —Apollinaire Scherr