i don't think so... i was on the middle-right... i was weaing a red tank top and was headbanging reaaaally hard... (apparently i'm really scary at concerts? XD) and i was in a big group of people... OH and i turned around and appologized to the people around me for being tall... and i made (well, he offered) a guy behind-ish me to get me some water right before the d'espa set... if any of that sounds familiar...
and don't worry... i was doing the same XD it's always great when you don't know the words so you just kind of make vowel sounds... XD