Secretary General Ban Ki-Moon, violin virtuoso Anne-Sophie Mutter, and Unilever CEO Paul Polman.

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VisitScotland has also enlisted Julie Fowlis, the singer who features on the film soundtrack of Brave, and violin virtuoso Nicola Benedetti.

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And, actually, now, let's go to a recording from 1950 by the 14-year-old violin virtuoso Michael Rabin, one of the great virtuosos of the 20th century.

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