The music that you hear when you install Windows XP (or not because your audio drivers were not yet installed), welcoming you to the once new version of windows.
You can find the music after the install in %SystemRoot%\s…
Banger track and also RIP Windows XP 2001 TO 2013
“Finally got that sound card working” -Dad, 2001
2001 was a good year
nostalgia trip