The Pet Shop Boys will unveil their latest project - a soundtrack to the 1925 film Battleship Potemkin - at a free show in London's Trafalgar Square.
The Pet Shop Boys will unveil new songs in the soundtrack
The film, an account of a sailors' revolt in 1904, has been a major influence on film-makers and artists.
The show, which will take place on 12 September, is part of a season of events taking place in the square.
In a statement, Neil Tennant and Chris Lowe said the soundtrack would include three new songs.
However, it will mainly be a instrumental score.
"It's wonderful to be given the opportunity to write a complete soundtrack to this classic film and then to perform it as a free concert in the heart of London," he said.
The soundtrack will be orchestrated by German composer Torsten Rasch, who recently launched his live work, Mein Herz Bernnt, based on the music of hard rock band Rammstein.
It will be performed by the 26-strong Dresden Sinfoniker.
Trafalgar Square was chosen because of its long history as the focus for political dissent in the UK.
The show is part of Trafalgar Square Summer 2004, a programme of free events organised by Mayor Ken Livingstone.
Philip Dodd, director of the nearby Institute of Contemporary Arts, which is producing the show, said: "I'm deeply grateful to the Pet Shop Boys and all the events collaborators for their immediate recognition that Trafalgar Square is the place for re-imagining the past in terms of the needs of the present."
The film, directed by Sergei Eisenstein, tells the story of a mutiny on board a Russian battleship, sparked by the crew being given rotten meat to eat. The revolt leads to a riot, which leads to a fleet of battleships being drafted in to destroy the Potemkin.
Battleship Potemkin has influenced many artists and film-makers
Artists influenced by the film include Francis Bacon, who said he was haunted by the screaming mouth in the film and was inspired to use it in his own work.
Tennant, 50 next month, and Lowe, 44, have been involved in a number of different projects since their first major hit, West End Girls, reached number one in 1986.
They include their 1987 film, It Couldn't Happen Here, and a West End musical, Closer to Heaven, in 2001.
The duo have also collaborated with a wide variety of acts, including Dusty Springfield and Liza Minnelli in the 1980s, to David Bowie, Robbie Williams and rock band Suede in the late 1990s.
Their last single, Flamboyant, reached number 12 in April.