30/07/2010 Wayne Marshall, Ben Heppner, Violeta Urmana, Eric Whitacre
Sean Rafferty is joined by organist Wayne Marshall ahead of his Proms appearance, performing Wagner improvisations on the Royal Albert Hall organ.
Tenor Ben Heppner and soprano Violeta Urmana appear with the Orchestra of the Age of Enlightenment and Simon Rattle in Act 2 of Wagner's Tristan and Isolde at this year's Proms.
Composer and conductor Eric Whitacre talks to Sean about his choral writing, and the forthcoming performance of his works at the Union Chapel in London.
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