The BBC wants a team of expert makers to transform junk and reclaimed materials into a full complement of orchestral instruments for a new documentary. The 90-minute film for BBC Four, entitled Scrapheap Orchestra, will follow the instrument making process and include a performance on the specially created instruments by the BBC Concert Orchestra under conductor Charles Hazlewood.

A spokesperson for the film's producers, Love Productions, said: 'We'll be asking makers to be as creative and ambitious as possible in their task. The failures and successes of various materials and designs will help us engage in the science and the history of musical instrument design and making.'

The documentary is scheduled for broadcast this autumn, and filming of the instrument making process is set to begin in May.