I like this song but i dont know if it is really made bye David Guetta, or what is the real name of the song. I want to search for the real version because in the song of this link i hear in the back some guy saying the name of others Djs and i think that this is not the original version. And who is Amanda and which other songs have she.

this is the link of the song on youtube: http://www.youtube.com/watch?v=sa-AODONXUs
Thanks.