Kanye West gave the FYF Fest crowd a surprise treat when he called on Rihanna to perform with him during the Los Angeles show on Saturday night.

The singer, rapper, songwriter and producer wowed fans with an amazing and electrifying stage as he performed on “Power,” “Black Skinhead,” “All Day” and other songs, Entertainment Weekly reported. One of the most memorable moments during West’s Saturday set was when he performed “FourFiveSeconds,” a single he recorded with Rihanna and Paul McCartney earlier this year. The FYF Fest crowd was surprised when the rapper reached down into the audience to hand over the microphone to the “Diamonds” singer herself. 

Rihanna reportedly looked unprepared with the unexpected concert spotlight before she told the crowd, “LA, make some noise for my n— Kanye!” The Barbadian beauty even sang with West during the “FourFiveSeconds” chorus while the rapper crouched from the side stage, Billboard reported. 

West shouted after the impromptu performance, "Make some noise for Rihanna in the crowd." The crowd was given a bigger treat when Rihanna later joined West on stage to perform "All of the Lights."

Aside from the impromptu performance with Rihanna, West was supported by his wife Kim Kardashian, who attended the concert with sisters Kourtney Kardashian and Kendall Jenner, E! News reported. The pregnant star even posted a few pictures on Instagram to share the experience with her 44 million followers. 

One of the snaps, which the reality star uploaded, was a picture of herself with her sisters, along with Carla DiBello, which she captioned, “D--- they don't make 'em like this anymore.” West’s other half also shared an image of him performing on stage while the lights blazed just above the rapper. Kardashian simply wrote, “Yeezus.”

West headlined the Saturday FYF Fest show after Frank Ocean cancelled his appearance last week. Aside from Rihanna, the rapper also called Travi$ Scott on stage to perform “Antidote.”