The song, called Rejoice Rejoice, was sung by a 1,000 strong choir conducted by Sir David Wilcox outside Buckingham Palace as the Queen left in her coach for a Thanksgiving service at St Paul's Cathedral.

I genuinely have a love for the monarchy so the lyrics came quite quickly, this is an occasion when the whole nation rejoices so I penned the words around that

Gordon Lorenz, Songwriter

Gordon Lorenz, who lives in Llandudno, is famous for writing the 1970s' balland There's No One Quite Like Grandma but he admits this song was slightly different.

"When you write lyrics you are either immediately inspired or it becomes a slug.

"I genuinely have a love for the monarchy so the lyrics came quite quickly, this is an occasion when the whole nation rejoices so I penned the words around that."

Mr Lorenz became involved with the musical tribute after he wrote the words to the official song to celebrate the Queen Mother's 100th birthday celebrations.

"The people who organised the Queen's Mother's event asked me to write the words to the official Golden Jubilee anthem," he said.

The anthem played as the Queen left Buckingham Palace

The 52-year-old was invited to London to hear the choir sing his song but he turned down the invitation.

"I have been invited but I won't do it," he said.

"I am going to stay at home and watch it on the television.

"I will feel nervous when I hear it, it is difficult when you have written something and you know how it should be heard."

The songwriter, who has met the Queen on a number of occasions, says he is confident that she will like his piece.

The recording of the song - which took just one hour to write - will be officially unveiled to the Queen during a formal lunch on 7 July.