Essentially, it's Phuture's "Acid Tracks" overlaid with Ben E. King's "Stand By Me"; not much else to it apart from a siren sound intro, but - as Warhol and Duchamp have proved - genius is in the idea, not the effort (although I suspect Rocky probably knocked it up as a live mix on two decks so it probably took a few takes to get right).
I picked up my copy at a second hand record fair years ago for $10 - bargain.
The b-sides are also quality acid house (Laurent X's "Machines" and Alexander Robotnick's "Problèmes D'Amour") but they're still available so go get them elsewhere.
Another top mashup of the period is by Rhythm Doctor; it's another outing for Phuture but this time with "We Are Phuture" combined with The Art Of Noise's "Moments In Love". I don't own a copy but I know folks who do so I'll post it if they let me...