Chris Brown and Young Thug have respectively collaborated with artists on different projects. Chris Brown has done Fan of Fan series with Tyga and Young Thug has a few, ranging from Rich Home Quan, Future and more.
Chris Brown took to his Instagram to announce that Young Thug and himself are working on a mixtape together. During this time of a global crisis, music surely does help. There's no date on when the project will release, but Chris Brown isn't one to hoard his music.