The Windows 98 startup sound was an evolution of the Windows 95 sound, with a more orchestral feel. As the first version of Windows to introduce the Start button and taskbar, this startup sound is often regarded as a classic.
The six-second jingle brings to mind the excitement and anticipation of exploring a new frontier in personal computing. The Windows 95 startup sound was composed by Brian Eno, a legendary ambient music composer.
A brief History of startup sounds in Windows.
How to change the default startup sound in Windows 11 or 10.