I walked up, my fingers rattling the beat of the song while my partner was strumming his air guitar. We knew the beat, we knew the notes, we knew the song. In front of 10,000 people, this was our biggest crowd. All we had to do was play the song we had been practicing for months and play it well. My piano was very clean as it was every night on the tour. This one was our biggest audience. My brother holding his guitar, ready to play. When we started, it was completely out of tune.