Sir Thomas Allen
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40th anniversary for opera star Sir Thomas Allen

26 January 2012 Last updated at 13:53 GMT

Opera baritone, Sir Thomas Allen, is marking the 40th anniversary of his Royal Opera House debut.

Sir Thomas has taken on 54 different roles with the company, and will celebrate the milestone by playing Don Alfonso in Cosi fan tutte.

He spoke to BBC Breakfast about which roles he has enjoyed the most.