Symmetry means that someone can be cut in half/folded evenly. So something symmetrical would be a square. If you fold it in half it will be symmetrical.
Asymmetry is when someone can not be cut/folded into even prices. Something Asymmetrical would be your hand. If you traced it into paper and cut it out, there would be no way to fold it evenly.
Answer: Art song. a song for solo voice and piano with high artistic aspirations. through-composed. music that exhibits no obvious repetitions or overt musical form from beginning to end.