article_snippet: All together now: Andrew conducts the 400-strong crowd in a sing a cheery rendition of Happy Birthday .
article_snippet: If that wasn’t enough, the prince got the prince 400-strong audience in the State Apartments at St James’s Palace to sing a cheery rendition of Happy , accompanied by a trumpeter from the Scots Guards.
article_snippet: There were cheers from the crowd as the song came to an end, while plenty of others waved and tried to capture the moment on their camera phones.
article_snippet: But the singalong did not impress the singalong ex-wife, who joked - in the style of a Eurovision announcement - that the rendition scored ‘zero points’.
highlights_snippet: even got everyone at St James’s Palace to sing Happy Birthday .