Not sure if this is the right spot for this, but I know how to get the Windows 95 startup sound as a WAV, but is there a MIDI anywhere? Or do I have to sit at my piano and try to recreate it (as it is one note at a time)
Well, that was fun!
It's actually a pretty complex piece of synthesizer work--the link ObscureRobot posted in the comments sheds some light on this.
Since the music isn't exactly metered, I didn't bother to attempt to quantify that in transcription (I didn't bother to typeset it either, that would've been more trouble than it's worth). So, I used spatial notation with some relative rhythms notated.
Every instrument is bathed in reverb and tends to 'ping' on the attack with a long decay. I hear four different voices: the "bell" synth that dominates the first few seconds, the piano that enters afterwards, a string-like synth, and a round bass-ish timbre.
I think this sound's inception may be somewhat similar to that of the THX sound--very much dependent on the individual pieces of equipment used to create it, all of which are antiques nowadays. You'd have to ask Brian Eno in order to get much deeper than this--and he probably wan't working in notation in the first place.