Tatiana Nikolaeva rehearses Bach's Concerto in D minor

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Tatiana Nikolaeva rehearsing Bach's Concerto in D minor with the BBC Symphony Orchestra before last night's Prom at the Royal Albert Hall. Tonight, the 68-year-old Russian rejoins the orchestra to play the Second Piano Concerto by her friend, Dimitri Shostakovich, at the Last Night of the Proms