"A great Shadow has departed," said Gandalf, and then he laughed and the sound was like music
Thanks for posting that. It reminds me of that place in Isengard when the hobbits (I don't have TTT with me this morning and I can't remember whether it's Merry or Pippin) are describing the "new and improved" Gandalf to Aragorn, Legolas, and Gimli. Gandalf is described as "laughing more." There are other references to the "underlying joy" of Gandalf throughout TT and ROTK. When I get home I'll see if I can't find the quotes for you.
May the shadow depart from all of us, here in the dark, 'real' world.