The music is Brian Eno’s start sound for Window 95 slowed down 23 times. The video is a commercial for Windows 95 played at .23x speed.
Twenty-three is the 9th prime number. Twenty-three is also the 5th factorial prime.
Software Used: Paul’s Extreme Sound Stretch
“The thing from the agency said, “We want a piece of music that is inspiring, universal, blah- blah, da-da-da, optimistic, futuristic, sentimental, emotional,” this whole list of adjectives, and then at the bottom it said ‘and it must be 3.25 seconds long.’” — Brain Eno, June 2 1996