He was plagued by self-doubt and had abandoned his music. But when inspired to compose again, Sergei Rachmaninoff wrote the music that would make him immortal. Benjamin Grosvenor plays the Second Piano Concerto. “He commands the stage, and makes you sigh with joy,” says The New York Times. Also, guest conductor Lorenzo Viotti makes his PSO debut in roaring showpieces by Verdi, Ravel and Richard Strauss.