Cricco Castelli - 'Life Is Changing'
I discovered this on a DJ mix from DJ Sneak, he obviously had it from before the album release. This track is eternal, it's very musical, it's got a soundscape that is timeless - it's filter house that ISN'T filter house. If you dropped it in a filter house set it would just annihilate the other tracks, and I love my filter house. This absolutely drives me nuts now 19 years after I heard it for the first time (as with all other songs on this list, of course).