So I just saw them for the first time and it was amazing. But I'm curious about how they play Seven Bridges Road in C major instead of D major (the original key on Eagles Live)... do they drop the guitar tuning a whole step, or do they put a capo on the third and play it? It seems like they play regular D, C, and G chord shapes just in a lower tuning, but I couldn't see them from where I was sitting... any guesses from the forum?