The Weeknd & Kendrick Lamar Perform 'Sidewalks' Live

Say, say, say! Kendrick Lamar surprised The Weeknd fans at a special Vevo show in Los Angeles on Saturday (Dec. 17).

Coming out during a performance of “Sidewalks” off Starboy, K-Dot and Abel dapped up one another before the TDE spitter delivered his show-stopping, rapid-fire verse.

Backed by a live band, things didn’t end there, as Kendrick stayed through the song’s final chorus, supporting The Weeknd on the streetwise anthem, which features vocals from Sam Smith.

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Before “Sidewalks” dropped, The Weeknd said the song helped him see Kendrick’s “genius” ways. “He’s a genius,” he told Beats 1. “He probably came in the afternoon and left late at night. He did it there on the spot. He played the record over and over. I played him songs, the ‘Starboy’ theme, of course, which he incorporated into his verse. He would just walk around, we had food, and he’s writing his verse in his head. He’d go to his phone, look at it a few, put it back in, start walking around. He then at one point went into the studio booth, closed the door, and I could hear him yelling his verse.”

On Friday (Dec. 16), Kendrick got a surprise of his own. He invited a fan on stage at his American Express show in Brooklyn, while the man delivered an impressive freestyle backed by K-Dot’s band. The impromptu showing even inspired Kendrick to freestyle live. Watch their mini cypher below.