could this have been Phil keaggy? he's a praise & worshippin' Christian acoustic looping guitar maniac. it's very hip when he sings background harmony into the sound hole & loops it. the opening acts do tend to be kinda lame, though... bobdog no it wasn't Phil, and I agree is opening set is lame. although I have never seen harmony in the sound hole trick I have been most impress with his other stunts. even if you hate every song he does he is a must see just for the sake of seeing what he can do with his guitar. I really have no idea who the guy was that was the looper. all I could think about is what he was doing not who was doing it. ........only three to four more days till the 'rang arrives.