Unknown song in video plz help

good morning guys!!
First of all i want to salut all members as a new member i am. (as you maybe have seen this is my first post )
I am from greece and i can say i have no idea from (this kind of) music.
I would like to find the name of a song which is in a video.
The vido link is ---->link<---
Thanks for any try you will make to find it.
Media player classic must be installed to play the video.
Thank you.
P.s sorry for my Engish....
I haven't spoken English for a long long time....

Plzzzzzzzzzzzzz
its 4 my girlfriend birthday and i want to make her a surprise....
Unfortunately her birthday is on Friday.....
I am lost :-(
i had posted this video to over than four music forums and no one had found the answer.
Is it a so rare song??