Remember? It has been included in every Windows from 3.1 (maybe earlier?) up to WinME. In case you’ve somehow never heard it, here. Its full title is “Trip Through the Grand Canyon”, and it was written by George Stone of Passport Designs.
**UPDATE 7/26/08: OH MY GOD!!!! LOOK IN THE COMMENTS!! The actual composer of the song commented on it!! This is, as you may imagine, an incredible dream come true for me — a fan arrangement being noticed by the original artist. ROCK ON, MR. STONE, you’ve influenced me in ways you probably never expected.