My two sons recorded the entire SonFest set on their iPhones. The bass was so intense that their phones were literally shaking! It was amazing! :) They are only 11 and 13, and I am so happy they did this for me! Amazing kids! Oh...and I accidentally kept kitting them while I was dancing...so if the phone suddenly jerks it is my fault! It is not a good concert unless you leave with bruising!