You're not the only one ?
Oddly enough my mate also got free tickets - his wife did some favours for the company doing the audio.
What was interesting is that he saw Bieber (55k+ peeps) and One Direction (45k peeps), also at the Stadium and reckoned t the sounds was 1000x better for Santana.
Perhaps it was that the stage was setup more towards the middle of stadium...and I'm sure Carlos has some prettyyyy good riders in the performance contract for the backline.
