The first half of this album by Canadian prog rock group Rush is a rock opera, which presents a dystopian future in which planet Earth of 2112 is ruled over with an iron fist by the alien Star Federation.

• 加拿大前卫摇滚组合“冲击乐队”的这张专辑的前半部分是一个摇滚歌剧,呈现了一个可怕的未来:地球在2112年被外星人的“星球联盟”高压统治着。