Damon Albarn marks 90 years of BBC radio
A composition by Blur frontman Damon Albarn will be played to radio listeners around the world on Wednesday to mark 90 years of BBC broadcasting.
2LO Calling is a "snapshot of the airwaves" featuring iconic sounds such as Bertrand Russell in Morse code.
The broadcast at 17:33 GMT will be hosted by BBC Radio 2's Simon Mayo from London's Science Museum.
Albarn told the BBC's John Wilson about his composition.
The unique simultaneous broadcast of BBC stations of Radio Re-united can be heard via the BBC News website at 17:33 GMT.