On “Hair Down,” SiR enlists the help of Kendrick Lamar with the first official single for his third studio album, Chasing Summer. This track marks the first official collaboration between the TDE labelmates, although SiR was a supporting act for Kendrick during his 2017-2018 DAMN. Tour. The song was debuted on Beats 1 Radio with Zane Lowe.

On August 6, 2019, SiR first teased the collaboration via Instagram and Twitter. The posts came hours after he announced a new deal with RCA Records; a similar deal to that of SZA prior to the June 2017 release of Ctrl.

SiR typically wears his dreadlocks back and doesn’t variate his style very much. Kendrick, on the other hand, alternates between a variety of looks but has adopted the “hair down” look since the release of his 2017 album DAMN.