Premise: `` Rehab '' is a song written and performed by English singer and songwriter Amy Winehouse , from her second and final studio album Back to Black ( 2006 ) . `` Rehab '' has become a critical and commercial success internationally , and has been referred to as Winehouse 's `` signature song '' . `` Rehab '' is a song recorded by Barbadian singer Rihanna for her third studio album , Good Girl Gone Bad ( 2007 ) .
Hypothesis: Rehab is Britney Spears's signature song.
Label: CONTRADICTION