In their own way, Beethoven’s five piano concertos each relate to a part of their composer’s life. In the previous volume of this complete series, pianist Kristian Bezuidenhout, conductor Pablo Heras-Casado, and the musicians of the Freiburg Baroque Orchestra explored the beginning (Concerto No. 2) and the end of the story (Concerto No. 5). For Volume 2, they turn to the most personal of Beethoven’s concertos. Even as the onset of total deafness threatened his career, his Fourth Piano Concerto shattered the conventions of the genre.