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.

Beethoven - Symphony No. 4 in B flat major (35 mins)
Pierre Boulez - Dialogue de l'ombre double (20 mins)
Beethoven - Symphony No. 3 in E flat major, 'Eroica' (50 mins)

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