Hey buddy, I found your question here while searching out a similar answer on the internet... The truth is, I'm 98% sure, that AT&T totally ripped off the sound of a Chemical Brothers song called "Where Do I Begin." Now, I may be wrong because CB takes stuff that was already out there as well, but regardless... The AT&T commercial sounds like it was trying to sound JUST like that song without sounding 100% like it to avoid getting sued. What bastards. Anyway, check out CB's "Where Do I Begin." Awesome song.