Flatline (Mutya Keisha Siobhan song)

"Flatline"
"Flatline"
Single by Mutya Keisha Siobhan / Sugababes
Released	6 September 2013
Recorded	January 2013
Studio	Los Angeles, California
Genre	Pop rock; R&B;
Length	3:51
Label	Polydor
Songwriter(s)	Mutya Buena; Keisha Buchanan; Siobhán Donaghy; Dev Hynes;
Producer(s)	Dev Hynes
Mutya Keisha Siobhan / Sugababes singles chronology
Alternative cover
	"Flatline" 2022 re-release cover
Music video
	"Mutya Keisha Siobhan - Flatline" on YouTube

"Flatline" is a song by English girl group Mutya Keisha Siobhan, the original line up of the Sugababes. It was written by the trio alongside British artist Dev Hynes, who also produced it. The song was released via digital retailers on 6 September 2013 by Polydor Records, who signed the band in 2012. It is an R&B-tinged pop rock song in which the drums and the male backing vocals get gradually stronger until a climactic part. Lyrically, it addresses the deterioration of a relationship.

Upon its release, "Flatline" received acclaim from music journalists, who favoured its production and vocal harmonies. Commercially, the song charted at number 50 on the UK Singles Chart and reached number 14 in Ireland. A music video for the song was directed by Auleta and filmed at Venice Beach. They performed "Flatline" at their Sacred Three Tour and at other headlining sets including Scala and G-A-Y.

On 9 June 2022, the single and music video were re-released under the Sugababes name. It was later included on their album The Lost Tapes (2022), an album created from songs originally recorded during their 2011–2014 studio sessions.
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