article_snippet: But in an advert break for last night's TV election contest the Tory leader took the chance to perform the Tory leader own party trick.
article_snippet: Initial reports that the Prime Minister had burst into song were disappointingly wide of the mark.
article_snippet: broken promises, judgement and ability to lead the country in the first prime-time TV contest of the general election.
highlights_snippet: Bizarre moment came while cameras were off during TV election contest .
  