The song Cara Mia (Turret Opera) at the end of the puzzle shooter Portal 2 is just great and this version pleases me even significantly better than the original, since it really perfect voices combine to create a terrific package. By the way, this is identical to the mp3 on Youtube to place video version. Nevertheless me this purchase has been the 99 cents! If there had been other variations of this piece, which would be hiked in my cart. ^ _ ^