Watch Childish Gambino, wearing an arm sling and neck brace, join 21 Savage on stage at …

21 Savage brought Childish Gambino out onstage at Lollapalooza 2019 on Friday, August 2 to perform ‘Monster’.

https://www.nme.com/news/music/childish-gambino-joins-21-savage-on-stage-at-lollapalooza-2019-monster-2535130