Pianist Paul Lewis talks with host Brian McCreath about Beethoven's Piano Concerto No. 4, and Andris Nelsons reveals two sides of Shostakovich's Symphony No. 11, "The Year 1905." Also, Alan McLellan and pianist David Deveau look back on Deveau's 22 years as Artistic Director of the Rockport Chamber Music Festival, and Chris Voss look ahead with Deveau's successor, violist Barry Shiffman.