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Filed under: What's That Song? 'End of All Time,' by Stars of Track and Field If you've been following ' Grey's Anatomy ' at all this season, you've probably noticed some big changes. There's been the merging of two hospitals -- and with it an influx of new characters who are carefully being written into more prominent roles as the plot line advances. Seattle Grace Hospital's morale has been low, title character Meredith Gray is hardly ever her "dark and twisty" [...]