66 is part of the GeoCities MIDI files packaged by ArchiveTeam, I have converted the file to a separate MP3 so you can preview it, additionally, you can download the MIDI file itself, or the MP3 File.
Note: While this is free, some MIDI files are copyrighted songs, so use at your own risk
KEY Am KEY Cm New Track New Track PITCH 1 PITCH 1 PITCH 1 PITCH 1 SONG 2\\5 SONG 3 PITCH 7 KEY Bm SONG 2\\5 New Track New Track