Almost no live act on the planet sells more concert tickets than Madonna. She hasn't been on the road since 2008, but this year she's going to release a new LP and tour the world to support it. Details will probably be announced shortly after her Super Bowl halftime set. Expect lots of new songs and many radically re-worked hits from her past. Also, expect to pay an insane amount of money for tickets. It's well worth it. She puts on a spectacular show.