Lana Del Rey delivered an impromptu performance of “West Coast” after she overheard a local band playing the track while passing through Santa Barbara, California.

Indie band the Fastest Kids in School were playing Del Rey’s 2014 Ultraviolence hit outside of a taproom when Del Rey, who was out getting ice cream, approached them and asked if she could join in on the performance.

“She just happened to be walking by while we were playing her song and motioned to see if we wouldn’t mind if she came on stage,” band member Dan Grimes wrote on social media of the surprise collaboration. “Of course we obliged and that is when my head exploded. She was just ‘out getting some ice cream’ she said.”

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