The "Firework" singer was headlining the O Son do Camiño festival in Santiago de Compostela, Spain when she made the dig, according to social media videos.

Katy Perry has created an entirely new show, complete with new props, for her festival run this summer, which she's dubbed the Out of Office Tour.

Katy Perry’s ‘Firework’ is perfect, but it took Aster trying hundreds of songs after not getting the rights to a Jay-Z track. On this week’s episode of the Filmmaker Toolkit podcast, writer/director Ari Aster broke down the scene that is sure to ...