Beethoven’s colossal contribution to music resulted in every form he tackled being extended, developed, and re-invented—and these two works are proof. His most famous piano concerto, No. 5, the Emperor Concerto, crowns his so-called Middle Period, and his Piano Sonata No. 28 (of 32) belongs to a group that transformed the piano sonata into something epic and exploratory. French pianist Hélène Grimaud offers performances marked by delicacy, power, drive, and a sense of inevitability: a very modern-sounding Beethoven.