Well I say a band like , Iron Maiden Vs metallica and one person choses out of those two he wants to win so if you say Iron Maiden then underneath you would put Iron Maiden Vs a band of your choise, example:
Iron Maiden Vs Metallica
then somone says,
Iron Maiden,
Iron Maiden Vs Bullet for my valentine
Then somone says,
Bullet for my valentine Vs Slayer
you get me one person makes one post and says the band they want to win the idea is to see which band stays on the longest, It's quite a popular forum based game let me know if you understand then we can start.