One of the world's greatest pianists, Andras Schiff, played his 60th birthday concert on Saturday - a hugely demanding programme of the Goldberg Variations by Bach and Beethoven's Diabelli Variations. Earlier he told the BBC's Tim Franks why he gave the performance in London - and not in his homeland, Hungary.

Andras Schiff takes me aback even before our interview begins: he shakes my hand, firmly.

About 18 months ago, on the eve of the 2012 Tour de France, I was warned by a press officer not even to proffer my hand to Bradley Wiggins, before an interview at his Majorca training camp. Team Sky simply could not risk me bruising the hands that would grip the handlebars that would steer Britain to its first ever Tour victory.

At the time, I could not work out whether ...

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