Amateur choirs across Norfolk are being offered a once-in-a-lifetime opportunity to perform on stage with some of the biggest stars in the country at one of the hottest parties of the summer.

Conducted by world-famous Anthony Inglis, the National Symphony Orchestra will join globally renowned soprano Annette Wardell, Classical Brit Award-winning Welsh vocal group Only Men Aloud and a traditional Scottish pipe band for the Great British Prom at Blickling, near Aylsham, on August 12.

And now organisers are inviting a local choir to join them on stage in front of thousands of revellers to perform the Jerusalem before the open-air concert culminates with a spectacular fireworks display.

Lisa Ward, director of concert organisers Revival Productions, said: 'We are so pleased to be returning to Blickling, where the concert has become a permanent fixture in the local social calendar. By giving amateur choirs this once in a lifetime opportunity to perform with the National Symphony Orchestra and the other amazing artists, we want to involve the local community and add something unique to the programme.'

The competition is open to all amateur choirs in the region – be they from colleges, Women's Institutes, local communities or the emergency services.

However, as this will be an evening performance, all choir members must be over 18 years of age.

Entrants are simply asked to visit: http://www.greatbritishprom.co.uk/choir-competition.html fill in the simple form and post a one minute video of them singing a song of their choice by April 29.

A shortlist of five choirs will be announced on May 8. And then Anthony Inglis will have the final decision on the winning choir, taking into account the number of 'Likes' each member of the shortlist receives on The Great British Prom's Facebook page.

The winning choir will be announced on June 14 and will be required to attend rehearsals at Blickling on the afternoon of the concert.

In addition to singing Jerusalem during the main part of the performance with the NSO, Annette Wardell and Only Men Aloud, the winning choir will also have the opportunity to perform at the start of the concert before the main programme begins.

They will feature in the concert programme and each member of the choir will receive a complimentary ticket for a guest to witness their performance.

Conductor Anthony Inglis, who is also music director for Welsh mezzo-soprano Katherine Jenkins, said: 'Truly memorable live performances are those that witness a real connection between the performers and the audience. I am very much looking forward to discovering the talent of the local amateur choirs and performing with them. This competition adds an exciting dynamic to The Great British Prom, which should create a magical atmosphere and a night to remember.'

For full event details and tickets visit www.revival-productions.co.uk or call the event box office on 01630 674342.