Wish You Were Here - David Gilmour - So, so you think you can tell Heaven from Hell, blue skies from pain. Can you tell a green field from a cold steel rail? A smile from a veil? Do you think you can tell? Did they get you to trade your heroes for ghosts? Hot ashes for trees? Hot air for a cool breeze? Cold comfort for change? Did you exchange A walk-on part in the war for a lead role in a cage?..