Concert Review: Katy Perry

3:59 PM PST 2/1/2009 by Craig Rosen, AP

She opened the set to the pre-recorded strains of Queen's "Killer Queen" and covered that band's "Don't Stop Me Now" as an encore. During her 75-minute homecoming set Saturday night at the Wiltern, Katy Perry revealed that she's also royalty of some sort: She's the queen of putdown pop.