Tangled Up is the fourth studio album by English-Irish girl group Girls Aloud. It was released through Fascination Records and Polydor Records on 16 November 2007, and was distributed in two physical formats and made available for digital consumption. The album is a pop record that incorporates elements of dance-pop, synthpop, and various EDM sub-genres produced by long time-collaborators Brian Higgins and production team Xenomania. Marking a more mature approach according to group member Cheryl, the album lyrically delves into themes of love, relationships and femininity, and it was the group's first experimentation with tools such as autotune and vocoder. Production and development began with each member meeting with Higgins to discuss their personal and professional experiences since the release of their third album Chemistry (2005). It was recorded separately from April to October 2007, with the band members earning songwriting credits for two tracks off the album.

Girls Aloud are a British pop girl group that was created through the ITV talent show Popstars: The Rivals in 2002. The line up consisted of members Cheryl Tweedy, Nadine Coyle, Sarah Harding, Nicola Roberts and Kimberley Walsh. In 2012, the group was named as the United Kingdom's biggest selling girl group of the 21st century so far, with over 4.3 million singles sales and 4 million albums sold in the UK alone. During their two decades together, the group achieved a string of twenty top ten singles on the UK Singles Chart, including four number ones. They also achieved seven certified albums, two of which debut at number one. They have been nominated for five Brit Awards, winning the 2009 Best Single for "The Promise".