"This is the synchronization theory between Stanley Kubrick's film "2001: A Space Odyssey" and Pink Floyd's song "Echoes" off the album "Meddle". Out of all Pink Floyd synchronization theories, we believe that this may have been purposely done, the most. Because Kubrick had asked to use Atom Heart Mother (Pink Floyd, 1970) in which Pink Floyd denied and later regretted.Ahem, well. Judge for yourself. Here's the video (part I):As soon as the song "Echoes" is played and the "Jupiter And Beyond The Infinite" title card pops up, a ping will sound. This pinging sound will ring once every few seconds for the first 1:20 or so. The music will slowly start to fade in after ten seconds or so. It is very eerie-sounding - as synthesizers slowly build, and eventually a mellow, slow guitar riff comes into play. As all this psychedelic, mellow music builds up the images on the screen are of the monolith floating around in space while the outstanding special effects show the planets in the background. The sense of limitless space is evident, and the music only enhances that feeling.
Both the song and the movie then end AT THE EXACT SAME TIME."
here's part II:
and here's Part III:
(It turns out there are a number of Floyd synch jobs all over the web, most of which are unlikely, like this one. But they're still kinda fun.)