nice analysis Holden
i've just been scouring my Underworld mp3's, and i have the ME demo from 1990 - which i just listened to - its dated just 0/0/1990...its recognisable as the version we know (but like the way Holden described it)
I also have a live set played by UW MK I dated 09/09/1991, which also contains ME....which basically leaves about 3 months before 1992, so either they had ME/The Hump in the can...or this didn't come out until 1992...as i suspect....(the live version is still very guitar 'band' oriented...and sounds more like the MK I stuff than the MK II version)...
more work to do on this analysis is supsect