It's an old trance song that has a repetitive key-tone that goes something like, "to to to-to-to to to to-to" and after it has a single key-tone every 4th beat. I know it's not well described but it's the best way i could explain it

It's quite uplifting and a bit more dark and uptempo than your regular 90's trance its a very known track I just can't seem to remember the name!!
Any help would be highly appreciated!!