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Fervent flag-waving is usually reserved for the Last Night of the Proms, so what was going on in this Philharmonia concert? The Arena was awash with a sea of red flags, the chorus – and conductor Esa-Pekka Salonen – were decked out in T-shirts bearing portraits of Lenin or Stalin.

Clever staging in Prague breathes fresh life into subversive works that were kept secret during the composer's lifetime.

Among the brilliant programming of The Rest is Noise festival in London, there was one concert this year that stood above all the others for me: the European première of Shostakovich’s opera prologue Orango. First discovered in an archive in 2004 by scholar Olga Digonskaya, Orango was never finished by Shostakovich, and indeed only a piano score remained.