Number 2 sounds like hell
(I will not be held accountable for your resulting lapse into total insanity after 20 minutes or so.)
And it doesn't appear to be open source, sadly.
You gotta just commit to the song.
I think it's because there are really only about 2-3 parts to the song. It doesn't really build up or down... it's a bit flat. And given that it's flat, you almost don't notice when it loops.
Repeating "X-Static" and "Exhausted" which have a slow plodding droning kind of sound worked for grinding out some lotus script (that was a while ago....)