Here's how we play. First poster lists a mainstream band, the next poster lists an indie band that is similar but better and tells how they relate, then posts a mainstream band of their own and it restarts. Neither band has to be a band you like it's more about providing substitutes for people when they say "OH I LOVE -blank-". Also It can be a very small similarity to keep it going faster.
Also don't criticize others choices just keep the game moving.
If you really need an example:
Angels and Airwaves
Nada Surf
Connection: Similiar voice
See simple.
I'll start
My Chemical Romance