Justin Bieber made a surprise (and increasingly rare) onstage appearance Friday to join SZA for "Snooze" at Inglewood, California's SoFi Stadium.

So far, guests for Kendrick Lamar and SZA’s Grand National Tour have been Playboi Carti, Baby Keem, Kaytranada, and Lizzo.

The two artists previously collaborated on the track “Snooze” from SZA's Grammy-nominated album.