Repeat: The singer's soulful, throaty vocals brought her stardom in 2007, but her troubled off-stage life -- chronicled in her top 10 hit "Rehab" -- won her notoriety.
The singer's soulful, throaty vocals brought her stardom in 2007, but her troubled off-stage life -- chronicled in her top 10 hit "Rehab" -- won her notoriety.