"The musical language of the Sonata is modern, even briefly strident in four movements. In the second, Allegro con brio, we hear a brief section that is not a quote but rather a recapitulation of the structure of Rhapsody in Blue. The bold, slow pace in the third, Molto adagio, movement feels serious, troubled, even pensive. A faint reference to a spiritual tune is so brief that it increases the agony when it does not materialize. The final movement, Misterioso allegro, demands great power but w...