Lady Gaga will be touring until March 2013 and will play 110 dates in total according to a rather cryptic tweet that involves the key you see to your right.
Talking about the key and necklace, which will be given "to the first monster in line every night at the Ball" and is "a symbol of the 'key' that opens the pit every night", Gaga said: "The real monster pit key will be signed by this fan and returned to me. There'll be 110 necklaces&signatures Mar. 2013."
Now, it doesn't take Columbo to work out what that last bit means, although the whole symbol key/real key business is a bit blurry to be honest.