The Doctor Who theme tune has been remixed to commemorate the series' 50th anniversary by Radiophonic Workshop - the band made up of surviving composers and engineers from the revered BBC studio. A section of the original, written by Ron Grainer and recorded by Delia Derbyshire in 1963 combines with Peter Howell's interpretation from the 1980s and a brand new intro, with visuals edited by the band. Radiophonic Workshop are currently recording an album of new music with contributions from members of Hot Chip, Prodigy and Roxy Music.Look out for an interview with the band in the Observer New Review on Sunday. With thanks to BBC Worldwide.