What is the name of this song? Tiesto played it on his College Invasion Tour on...

[Mohenjo]

...October 8, 2011 in Carson, CA? http://www.youtube.com/watch?v=wu689EnNrD8&feature=related <-- Link to the Youtube Video with the song I'm asking about

 

[Nic]

It's called "calling", originally by sebastian ingrosso & alesso