WATCH: Katy Perry Surprises First Responders At Kick Ash Bash In California

Katy Perry surprised a crowd of thousands when she took the stage to perform during a benefit concert in California for the first responders and victims of the state's recent natural disasters. 

The pop star’s appearance was part of Kick Ash Bash on Sunday (February 25) at the Bella Vista Polo Club in Summerland, California. The benefit concert honored 2,300 first responders, and the show raised money for the victims of the Thomas Fire and the deadly Montecito mudslides. The natural disasters marked some of the biggest in the state's history. 

#VIDEO | @katyperry was a surprise guest at One805 Kick Ash Bash honoring and raising funds to the men and women of Fire, Police, Sheriff and CHP in Santa Barbara today pic.twitter.com/8Eo5aJqB7m

— Katy Perry Updates (@katyspics) February 25, 2018

Perry performed acoustic renditions of some of her biggest hits, including “Firework” and “Part of Me” for a crowd of 2,300 first responders. 

.@KatyPerry performando "Firework" no "One805 Kick Ash Bash". ---- pic.twitter.com/DWh9T4Uj1t

— Katy Perry Brasil (@katyperrybr) February 25, 2018

Additional performers included Dishwalla, Alan Parsons, David Foster, Katharine McPhee, Glen Phillips, Steve Vai, Richard Marx, Wilson Phillips, David Crosby, The Doors’ Robby Krieger, The Caverns and Kenny Loggins.