What's the Band you would like to see Live the most?

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I have already seen a nice number of great bands live, but there are still many I would love to see live. Most are obviously my favorite bands, but others are bands that even not being my favorites are ok and must be a great deal of fun live. So, In first position is Metallica, i MUST see them live lol. Also bands like AC DC, Iron Maiden, Rammstein, Héroes del Silencio, Slayer, etc So which bands would you like to see live the most? any in particular you haven't seen yet?