Katy Perry Set to Sing for Obama at L.A. Fundraiser Concert

Katy Perry has signed on to perform at the President Obama fundraising concert Oct. 7 in Los Angeles.

Perry is expected to be one of several artists who will sing for the president at the "30 Days to Victory" concert at the Nokia Theater.

The other performers are expected to be disclosed in coming days. The tickets, which will be available through the campaign, start at $44 per person for supporters under age
40. General admission is $250 per person.

Following the concert, there will be a dinner, hosted by Jeffrey Katzenberg, with the president at a nearby restaurant. Those tickets start at $25,000 per person.