Beethoven - Symphony No. 4 in B flat major (35 mins) Pierre Boulez - Dialogue de l'ombre double (20 mins) INTERVAL Beethoven - Symphony No. 3 in E flat major, 'Eroica' (50 mins) Jussef Eisa: clarinet, Proms debut artist IRCAM live electronics West–Eastern Divan Orchestra Daniel Barenboim: conductor Daniel Barenboim and his youthful ensemble relish the energy of Beethoven's Fourth Symphony before tackling the 'Eroica', one of the irrefutable mould-breakers of classical music. Between these peaks, Boulez's Dialogue de l'ombre double introduces another kind of theatre, the clarinet's electronic double becoming more 'real' than the soloist physically present.