An alternative version of the song featuring English singer Rita Ora was released on 3 February 2015 as the album's third single.

[3] Charli is seen performing a snippet of the song in a commercial for Pepsi's "Out of the Blue" music campaign, which aired during the 57th Annual Grammy Awards, on 8 February 2015.

[5] On 7 January 2015, it was announced the European version of XCX's second studio album would be delayed, to allow for the release of a remix of "Doing It" featuring Rita Ora.

[8] It was filmed in the Californian desert and takes inspiration from Thelma & Louise (1991), Natural Born Killers (1994), Barbie, Florida strip clubs, 1970s fashion and the work of David LaChapelle.

[11] On 10 February 2015, she performed the song on BBC Radio 1's Live Lounge, along with a cover of Taylor Swift's "Shake It Off".