Robin Ray introduces Boulez at the Royal Albert Hall For his final concert as Chief Guest Conductor of the BBC Symphony Orchestra, recorded at this year's Proms, Pierre Boulez conducts two great 20th-century classics: Bartok's Second Piano Concerto, in which the brilliant virtuoso solo part is played by Michel Beroff, and a complete performance of Stravinsky's ballet score The Firebird, a masterly showpiece for the orchestra and its conductor. Executive producer JOHN DRUMMOND Director PETER BUTLER.