Old topic...but one I can't resist responding to now that I found it after random searching.
Yes, I have been to concerts. Two big ones in fact. The first was on February 18th, 2006. It was in Pittsburgh, and I saw Opeth, a Swedish death metal band, with my brother and his girlfriend at the time. That was great fun.
But it was nothing (in my opinion) compared to September 23rd, 2007...
Sonata Arctica in Peabody's Down Under, Cleveland! They're a melodic power metal band, and have the most brilliant lyrics I have ever heard. This one I planned myself, buying three tickets for me and my two best friends several months ahead of time as soon as I discovered this, because one of my friends lives about half an hour from Cleveland. It was easily one of the best nights of my life. This band gets so engaged with the audience and are brilliant onstage, even in a small venue like Peabody's. Every song was just beyond brilliant, especially "Full Moon" because of how much the audience gets into that song, as well as the their finale, "The Cage". AWESOME! This is a band I would see again if I ever got the chance, especially since they are Finnish and aren't in the States often.