Alan Cumming, Herbie Hancock and Nicola Benedetti are among 2,000 artists taking part.
More than 2,000 artists are to take part at this year's Edinburgh International Festival
It is also Mr Linehan's final year as festival director. Violinist, Nicola Benedetti, who will take over as director of the festival in October. Sir Ian will perform the speeches and soliloquies and will share the role with lead dancer Johan Christiansen, performing alongside the Edinburgh Festival Ballet company.
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