Aha in fact, adrenaline helped me a lot I guess. As soon as I saw him right in front of me asking for me to come on stage, I became someone else... Seriously, I couldn't imagine myself singing in the front of 600 people with Mr Armstrong's cheek right next to mine lol. I had some friends in the crowd, they all told me they would never have expected somthing like this from me. They just couldn't believe that it was me up on stage making the show and entertaining the crowd.
Somehow, the best thing I keep from this day is that they were all enjoying it with me... The band, my friends, and the whole crowd. That's a feeling I can't even describe...