I know that I have heard the melody in some other trance track that is less hard. But I can't remember which one it was. I hope you can help me out :-)

Well, the actual 'stolen' melody is Handel's Sarabande in D Minor (From Harpsichord Suite No 11 in D minor)!!
But the recent trancer you're possibly thinking of is:
La Vallée - The Sky Ain't the Limit
from 2002...

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CAN YOU ID THIS MYSTERY RONSKI SPEED SPUN TUNE??

Yeah, that is exactly the track I've been searching for. Thanks alot m8

haha nice shot there saucer, i would be thinking Ace's Delight Vs. Based - "Witness" :P

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Ronski Speed B2B Tiesto
I DRANK AND MADE A MIX SERIES
Vol One-Vol Two-Vol Three-Vol Four-Vol Five-Vol Six
I ALSO LIVESTREAMED
THE LAST FLIGHT - PROGRESSIVE HOUSE/TRANCE

Well, I think I have some labeling problem here... "Venom pres. Kasuma" is wrong. "Ace's Delight vs. Baced" is the right artist for the track I have posted.