Nine is the eighth studio album by American rock band Blink-182, released on September 20, 2019, through Columbia Records, as the band's first album on the label. The band began developing the album after fulfilling touring obligations for their previous release, California (2016). While Nine builds upon their collaboration with producer John Feldmann, who also produced California, it also utilizes additional outside producers and songwriters including Captain Cuts, the Futuristics, and Tim Pagnotta. Nine is the band's second and final album to feature both Feldmann and guitarist/vocalist Matt Skiba.

Blink-182 is an American rock band formed in Poway, California, in 1992. Their current and best-known line-up consists of bassist and vocalist Mark Hoppus, guitarist and vocalist Tom DeLonge, and drummer Travis Barker. Though their sound has diversified throughout their career, their musical style, described as pop-punk, blends catchy pop melodies with fast-paced punk rock. Their lyrics primarily focus on relationships, adolescent frustration, and maturity—or lack thereof. The group emerged from a suburban, Southern California skate punk scene and first gained notoriety for high-energy live shows and irreverent humour.