Immobile: There are no plans for Leonard Slatkin to take part

The 30 participants will be known collectively as the Cheltenham SIM-phone-ya.

Turner is planning a work of three movements, the first exploring the history of the mobile phone and the second featuring audience participation.

The third is described by Turner and Moore as "a celebratory finale".

"The work is supposed to be a bit of fun," said poet Moore.

'Interesting'

"These mobile phones are like little Bontempi organs, and we thought we could use them together, just like an orchestra.

"You hear these things go off every day," he added. "Perhaps we could use them to do something more interesting."

The New Ring Cycle is due to be performed on 20 July.

The BBC Symphony Orchestra is scheduled to perform, with chief conductor Leonard Slatkin and soloist Melvyn Tan, at the festival, which runs from 5 to 20 July.

The BBC orchestra is due to play pieces by Copland, Schumann, Ives and Stravinsky on 6 July.