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Helen Mirren anger: 'You could hear her over the drums'

6 May 2013 Last updated at 18:31 BST

A conductor has described being scolded by Dame Helen Mirren for disrupting her performance at a London theatre.

A band of street drummers were playing on a Soho street to promote a festival when Dame Helen came out of the nearby Gielgud Theatre where she is appearing in The Audience.

The street drummers' conductor Liam Emerson told the BBC: "It's not every day you get told off by a dame dressed as the Queen."