"Kill Bill" is a song by American singer-songwriter SZA and the fifth single from her second studio album, SOS (2022). It is a pop and R&B murder ballad, built around a midtempo, groovy rhythm and a detuned melody. Guitars, a bassline, and a flute that was sampled from a Prophet-6 synthesizer constitute the song's production, which is influenced by the boom bap subgenre of hip hop. Mirroring the plot of the Kill Bill film duology (2003–2004) after which the song is named, the lyrics discuss a fantasy to kill an ex-boyfriend and his new girlfriend out of jealousy, and they employ humorous irony alongside violent imagery that contrasts with SZA's soft vocals. "Kill Bill" was sent to US radio on January 10, 2023, after achieving success on streaming services.

The SOS Tour is the second concert tour and first arena tour by American singer-songwriter SZA, in support of her second studio album, SOS (2022). It was announced on December 13 alongside merchandise for the album, four days after the album's release. The first and third legs took place in North America, with 18 shows for the first and 20 for the third. There were 15 stops in Europe for the second leg, and there will be 9 stops in Oceania for the fourth leg. Other stops for 2024 include festival appearances in Latin America, Europe, and North America.