Lest you take the headline the wrong way, Katy Perry and Rihanna did not perform together at any point. (They seemed a bit torn up on Twitter over it, though. Couldn't someone have fudged the set list?) Instead, both artists, both currently touring, took the stage for the weeklong Rock in Rio festival--first Katy, then Rihanna as Katy, it seems, was in the audience. Here's what they performed.

Katy Perry, "Firework":

Katy Perry, "Teenage Dream":

Katy Perry, "Thinking of You":

Rihanna, "Umbrella":

Rihanna, "What's My Name":

Rihanna, "Shut Up and Drive":