So what is it?

[In_Tulsa]

http://1170kfaq.com/artman/publish/article_17995.shtml

Sounds big maybe The Wiggles Live!!

[RecycleMichael]

Chris Medlock looks just like the red wiggle Murray.

[Hoss]

I read somewhere (maybe here?) that one of the possibilities is Madonna...

Oy.

[AngieB]

KOTV says the promoter is Live Nation which represents U2, Jay-Z, and Madonna.  

I hope it's U2.

[rwarn17588]

It might be Paul McCartney. He's rumored to be starting a world tour this fall.

http://www.ticketnews.com/Paul-McCartney-world-tour-rumors-continue06810122

It may be the last time we see him. His tours are pretty darned infrequent already, and he's 66 years old. He may be ready to hang it up.

I doubt it's U2; the band is busy recording and has no gigs scheduled whatsoever.

[FOTD]

Bet it's Madonna (@50!)