Microsoft Sound

In 1994 Microsoft corporation designers Mark Malamud and Erik Gavriluk approached Brian Eno to compose music for the Windows 95 project. The result – composed by Eno on an Apple MacIntosh computer – was the six-second start-up music-sound of the Windows 95 operating system, the The Microsoft Sound.

In the San Francisco Chronicle he said:

"The idea came up at the time when I was completely bereft of ideas. I'd been working on my own music for a while, and was quite lost, actually, and I really appreciated someone coming along and saying, "Here's a specific problem — Solve it!" 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 3¼ seconds long". I thought this was so funny, and an amazing thought, to actually try to make a little piece of music. It's like making a tiny little jewel. In fact, I made eighty-four pieces. I got completely into this world of tiny, tiny, little pieces of music. I was so sensitive to microseconds, at the end of this, that it really broke a logjam in my own work. Then, when I'd finished that and I went back to working with pieces that were, like, three minutes long, it seemed like oceans of time."


yep, lifted off entirely from wikipedia