Amy Winehouse - Rehab (2006)

From her second studio album, Back to Black. Written by Winehouse, it was released as the album's lead single in the United Kingdom on 23 October 2006. The lyrics are autobiographical, describing her drinking habits and refusal to enter rehabilitation clinics. The song received widespread critical acclaim and enjoyed commercial success in the UK and abroad. The tune won the 2007 Ivor Novello Award for Best Contemporary Song. Rehab also won three Grammy Awards in 2008, including Record of the Year, Song of the Year, and Best Female Pop Vocal Performance.
Her subsequent public battle with substance abuse and the song's popularity contributed to its numerous appearances in the mainstream media. Several artists have covered the song, both in official releases and live. There are two official remixes; an awful one featuring Jay-Z that seems to only include him because his number happened to be on the producer's speed dial, and a second featuring Pharoahe Monch. In the UK, a further remix by electronic band Hot Chip was also released.
On a personal note, the very first time I heard this track, I was convinced that it was some long-lost 60's/70's Northern Soul track (drug rehab isn't a new thing dontcha know), such is its authenticity.