The 70-year-old singer told the Sun about how he approached the musical pioneer behind the Doctor Who theme - the BBC Radiophonic Workshop's Delia Derbyshire - to rework the song.
McCartney said that he even went round to visit Derbyshire, who died in 2001 aged 64, became famous for her work with synthesizers.
He added that his plan was to do an electronic backing for his song but the collaboration never happened and the song was played on conventional instruments.
The song was released on 1965 album Help! and became one of the most covered songs.
--ANI (Posted on 25-03-2013)