Whaddaya mean you don't recognise it? It's the Windows 95 start-up sound, and it's recently been added to the US Library of Congress list of nationally significant recordings. Alongside "Goodbye ...

Windows Sonic is a surround sound emulator that enhances the audio quality of headphones. This feature adds spatial sound and tries to enhance the sound even if you are not using high-end headphones.

New entrants are added “based on their cultural, historical or aesthetic importance in the nation’s recorded sound heritage” ...