Kendrick Lamar performed in front of some of his fans at the Galapagos Art Space for a private event held by Foot Action last night. And a surprise guest showed up to assist him on one of his most popular tracks.

The West Coast native performed some of his biggest singles from his latest album, 'good kid, m.A.A.d. city,' for the fans in the crowd. When it was his time to perform 'Bitch Don't Kill My Vibe,' he had U.K. singer Emeli Sande join him onstage.

She gave a beautiful introduction to the song, which was not included in the version on Lamar's album.

Originally, Lamar had Lady Gaga tapped for the track. The two recorded the song but he released the official version without her, and added Jay-Z to the official remix. Sande and the rhymer also collaborated on the remix to her big hit, 'Next to Me.'

The people at bring you footage of the complete performance below.

Watch Emeli Sande Perform 'Bitch, Don't Kill My Vibe' With Kendrick Lamar