This is how the opening to 2001: A Space Odyssey was supposed to sound

20 May 2016, 11:39 | Updated: 26 May 2016, 12:37

2001 opening Richard Strauss

The first 22 bars of 'Also Sprach Zarathustra' became a classical hit because of Kubrick's masterpiece. But Alex North got there first.

The use of Strauss's ‘Sunrise’ theme in 2001: A Space Odyssey made it one of the most popular pieces of classical music.

LISTEN AGAIN: Saturday Night at the Movies, Sci Fi special >

But the film's director Stanley Kubrick originally commissioned a soundtrack from the great Hollywood composer Alex North, with whom he had worked previously on Spartacus and Dr. Strangelove. In just two weeks, North delivered a spectacular score but, late in the day, Kubrick chose to abandon North’s music in favour of the Strauss which he had previously used in an early show reel of footage from 2001.

The composer wasn't aware his music had been dropped until he went to the film's New York City première. He was devastated.

North believed, until his dying day, that his score for 2001 was the better accompaniment to Kubrick's images and that his talents had been grossly undervalued. Only now, with the reconstruction of his soundtrack can we make our own minds up.

Alex North's original opener to 2001: A Space Odyssey