DC's Legends Of Tomorrow Trailer: Every Easter Egg & Reference Explained

This is a relatively minor one, but given how important the referenced event was, it's worth pointing it out.

The haunting music used in the opening section of the trailer - no, not the Star Trek prologue - is the same theme that was used in all the promotion for the Arrowverse's Crisis On Infinite Earths crossover.

It was also used in the prologue for Crisis' first episode and has become so synonymous with the TV event that you're almost expecting to hear The Monitor's voice over the top of it.

Perhaps a strange choice given that it's been used recently, but hey it's Legends.