Good grief...I am going crazy trying to identify this song.
You see, it has no vocals.
But fortunately, I remember the music video, sort of.

My memory is a little bit fuzzy but it goes like this.
There are students inside a lab room, the students are dressed with lab coats by the way. And they are looking at organisms through a microscope or any other science object.
Though, what they see is a group of guys moving and playing...which I think is the techno/trance group. (It is a techno song, I think. )
Some students start dancing and do not pay attention to the teacher.
I think that at the end the teacher sees the group of guys through the microscope/scientific instrument and he/she starts dancing like crazy.
Well, that is the most I can remember, I saw the video a long time ago.
But then, I watched the final of the 2005 Confederations Cup (which took place in Germany) and the song was played in the stadium.
Does anybody have any idea of this song?

Also, there is another track I am looking for.
Though, this one is not as important as the first one.
I mean, my brain is obsessed with finding the former.
Regardless, this song has no vocals too. But I remember bits of the video.
There is a bald young man (or at least a man with little hair) who is inside a (blue?)room. And he is playing the keyboard. I think the keyboard is white, I am not sure.
The video jumps from showing the man playing the keyboard inside the room to images of people (especially youngsters) dancing in a disco or some kind of techno party.
Now, this song was quite popular and there is heavy use of the keyboard.