This is the song that plays during the death of George O'Malley (T.R. Knight), way back in season five, episode 23. George is unrecognizable after a tragic bus accident, and everyone realizes it's him just a little too late.
George isn't the only one who's dying, either. Izzie is also on the brink, and in some fantastical purgatory, she wears her prom dress from season two and rides the elevator. She comes face to face with George, who's dressed in full military garb. Izzie doesn't get off the elevator, the doors close, and George dies and Izzie survives.
