Theme from Doctor Who
The original 1963 arrangement of the Doctor Who theme is widely regarded as a significant and innovative piece of electronic music. Recorded before the introduction of synthesisers, Delia Derbyshire used musique concrète techniques. Each and every note was painstakingly handcrafted using pre-recorded individually struck piano strings as well as electronic equipment such as wave signal generators, noise generators, filters and square- and sine-wave oscillators (which were themselves rare at the time), with the results pitch-shifted if necessary. Finally each note, on magnetic tape, was cut up and joined together in the correct order.