Tour Dates

Katy Perry has introduced dates for a North American summer time tour. She swings by Seattle's KeyArena July 20.

Tickets for the Seattle present go on sale 10 a.m. Jan. 29 at www.katyperry.com/tours.

The tour makes extensive use of social media. For example, fans can test into tour venues on Fb, and obtain special treats. They'll additionally submit photos of the show through Twitter that will be incorporated in the stay show.

Perry's final album, "Teenage Dream," offered 5 million copies worldwide, with three Billboard Sizzling a hundred singles - "California Gurls," "Teenage Dream" and "Firework."