What's the name of the song that's playing in this video?!

I want to know the name of the song that's playing in this video!. If anyone knows it, please tell me!. If you can't tell what the song is by its words, then try to tell by its beats cuz I think that would be easier!.

Here is the video

http://www!.youtube!.com/watch!?v=KRu2Dfkcp!.!.!.

Here is another video with the same song!.

http://www!.youtube!.com/watch!?v=XIE_smkGp!.!.!.Www@Enter-QA@Com

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