"Say So" is a song by American rapper and singer Doja Cat from her second studio album, Hot Pink (2019). The song was written by Doja Cat with her manager Lydia Asrat, Jamie Parker, and Dr. Luke, who handled production for the song under the pseudonym Tyson Trax. Originally an album track, the song was serviced by Kemosabe and RCA Records in January 2020 as the record's fifth single after it gained traction on TikTok, where a dance set to the song went viral. A pop song, it features elements of 1970s funk, disco, and pop rap. Directed by Hannah Lux Davis, the music video earned praise for its matching retro 1970s aesthetic. In both the video and the song's lyrics, Doja Cat explores flirting and invites a stranger with whom she feels a connection to come over and talk to her.
The solo version of "Say So" initially peaked at number five on the US Billboard Hot 100, before two remixes featuring rapper Nicki Minaj propelled the song to number one. With this, the track earned a Guinness World Record for becoming the first female rap duo to top the Hot 100, also earning both artists their first number-one song in the US. Elsewhere, the song reached the top ten in 25 countries including the United Kingdom, Canada, Australia, Ireland and New Zealand, becoming Doja Cat's first mainstream hit and her pop radio breakthrough. It has received several certifications, including a sextuple platinum from the Recording Industry Association of America (RIAA) and an eightfold platinum from the Australian Recording Industry Association (ARIA).
To promote "Say So", Doja Cat performed the song on many television programs and awards shows, including the 2020 MTV Video Music Awards, the 2020 Billboard Music Awards, and the 63rd Annual Grammy Awards, where the song was nominated in two categories: Record of the Year and Best Pop Solo Performance. The song and its music video appeared on several year-end lists, as well as Billboard's list of the Best Pop Songs of All Time, although many critics were polarized by its success and described it as a comeback for its producer and co-writer Dr. Luke, following the 2014 Kesha v. Dr. Luke lawsuits.
