Def Jam Recordings released the song for airplay on contemporary hit radio in the United States on October 6, 2008. According to American music magazine Rap-Up, both 'Breakin' Dishes' and 'Rehab' were potential single releases, but 'Rehab' was chosen.

'Rehab' was the eighth and final single to be released from Rihanna's third studio album Good Girl Gone Bad (2007). He's also such a genius when it comes to lyrics.' He's a fun guy and likes to make all the sessions enjoyable. She said, 'Working with Justin in the studio is just great. Rihanna told Robert Copsey of Digital Spy that she enjoyed working with Timberlake, and learned much from the sessions. Timberlake told Entertainment Weekly that he believed 'Rehab' to be 'the bridge for to be accepted as an adult in the music industry'. Rihanna's stint with Timbaland also resulted in 'Sell Me Candy' and 'Lemme Get That', produced for Good Girl Gone Bad.

Hannon Lane co-wrote and co-produced the song, and Demacio Castellon recorded and mixed it in 2007 at Roc The Mic Studios in New York City. Timbaland, who wanted to compose a song called 'Rehab' for Rihanna, was producing a beat, when Timberlake came in and improvised the song over it. Weeks later, the three got together in New York City, where Timberlake had already conceptualized a song for Rihanna. After completing a show in Chicago, they joined Rihanna in the studio, where Timberlake experimented with beats and melodies. Timbaland was on tour with Justin Timberlake to promote Timberlake's 2006 album FutureSex/LoveSounds, which Timbaland had also produced. 'Rehab' is one of the three songs composed and produced by Timbaland for Rihanna's third studio album, Good Girl Gone Bad. Production and releaseДЄccording to Rihanna, Timberlake wrote the song's lyrics 'in his head.

Rihanna performed 'Rehab' on the Good Girl Gone Bad Tour (2007вЂ“09), and occasionally on the Last Girl on Earth (2010вЂ“11). It won the Urban Music Award for Best Music Video. Anthony Mandler directed the accompanying music video, which was shot in Vasquez Rocks Park, near Los Angeles. It was certified double platinum by the Recording Industry Association of America (RIAA). It reached number 16 on the UK Singles Chart and number 18 on the US Billboard magazine's Hot 100. 'Rehab' reached top-ten positions on the singles charts in Austria, Germany, the Netherlands and Norway. 'Rehab' is a mid-paced R&B song with an emotional, melancholy chorus the lyrics are about the protagonist's painful memories of her former lover, who is portrayed metaphorically as a disease. Timberlake wrote the song in collaboration with his producers, Hannon Lane and Timbaland, and provided additional vocals. Development of 'Rehab' began while Rihanna was accompanying Timbaland on Justin Timberlake's FutureSex/LoveShow tour in 2007. It was released in the United Kingdom as a CD single on December 8, 2008. Def Jam Recordings serviced the song to contemporary hit radio in the United States on October 6, 2008, as the eighth and final single from the album. ' Rehab' is a song recorded by Barbadian singer Rihanna for her third studio album, Good Girl Gone Bad (2007).

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