onstage at 2012 ASCAP Pop Awards - 04/18

onstage at 2012 ASCAP Pop Awards - 04/18

Katy Perry and Max Martin onstage at 2012 ASCAP Pop Awards - 04/18

Katy Perry and Max Martin onstage at 2012 ASCAP Pop Awards - 04/18

onstage at 2012 ASCAP Pop Awards - 04/18

onstage at 2012 ASCAP Pop Awards - 04/18

onstage at 2012 ASCAP Pop Awards - 04/18

onstage at 2012 ASCAP Pop Awards - 04/18

at 2012 ASCAP Pop Awards - 04/18

at 2012 ASCAP Pop Awards - 04/18

at 2012 ASCAP Pop Awards - 04/18

at 2012 ASCAP Pop Awards - 04/18