"Evolution" is one of my very favorite acid-trance tracks---period. The melody, structure, and oh yes, ACID are all so wonderful. Seriously, this track reminds me of "Whiplash" by Overcharge on Time Unlimited, in that both tracks strike me as more or less perfect; I personally could not think of any way to improve them, really.To be fair, "Argon" is less exciting to me, though not bad. But who cares? "Evolution" alone makes this a must-have release. GENIUS.