On my first trip, we'd been listening to tekno. When we were coming down, one went to bed and me and my mate went to his room and put on Echoes. When I heard the watery synth sounds at the start, I exclaimed "There's no way music like this can be legal."
Still my fave single toon of all time.
But the modern acid tekno I was listening to from 1992 onwards was even more mindblowing.