“That left the latest appearance by pianist Yuja Wang — charismatic, technically dazzling and artistically persuasive as ever — to address the pleasure principle pure and simple. In Ravel’s Piano Concerto for the Left Hand, Wang’s playing was a starburst of wit and dark expressivity, from the steely strut of the parallel chords that open the jaunty central section of this one-movement work to the intricate polyphony of the cadenza …