The Weeknd’s “Starboy: Legend of the Fall” rolled into The Forum in Los Angeles on Saturday night (April 29), so it was only right that he invited L.A.’s top rapper Kendrick Lamar to share the stage with him.

The Toronto rap star brought out K.Dot onstage much to the sold-out crowd’s delight. The Compton rhymer assisted The Weekend on a rendition of their collaborative song, “Sidewalks.” Afterward, Lamar treated fans to an energetic performance of “Humble,” his No. 1 single from his Damn. project.

Those lucky L.A. concertgoers got a sneak peak of what Lamar is planning to bring to his upcoming "Damn. Tour." The North American trek is slated to start on July 12 in Arizona and will hit venues in Houston, Philadelphia, Brooklyn, N.Y., Washington, D.C., Boston, Detroit and Las Vegas, before wrapping it up in Los Angeles on Aug. 6. Joining Lamar on the trek will be fellow rappers D.R.A.M. and Travis Scott.

Check out clips from Kendrick Lamar's performance above and below.

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