Chris Brown’s “Party Tour” rolled into Anaheim, Calif., on Tuesday (May 16) and he brought a very special guest with him. Compton’s own Kendrick Lamar made a surprise appearance and rocked the mic alongside the R&B superstar.

Midway through the show, Breezy took a pause and introduced K.Dot to the crowd. The TDE rhymer popped up and performed his No. 1 single, “Humble” from his critically acclaimed album, Damn.

While Brown was dancing beside him, Lamar delivered his blistering rhymes as the sold-out crowd rapped along with him reciting every word without missing a beat. At one point, the crowd yelled: “My left stroke just went viral!”

Later, Brown went on his Instagram page and posted photos of him and Lamar rocking the stage together. In one pic, Brown is bowing to Lamar in a show of respect.

Brown is almost finished with his “Party Tour.” The trek will make stops in San Jose, Calif. on Thursday (May 18), San Diego, Calif. on Friday (May 19), in Las Vegas on Saturday (May 20) before wrapping it up in Los Angeles on May 23.

Meanwhile, Lamar will embark on his "Damn. Tour" this summer. The jaunt launches July 12 in Phoenix, Ariz., and ends Sept. 2 in Miami.

Check out Chris Brown's post-concert photos below.