NEWARK, New Jersey (AP) - You know her as a Grammy-winning singer. But Lauryn Hill compares her time in the music industry to being a slave - during which time she had "an economic system imposed" on her. That view will cause her to literally lose her freedom for a while. She will have to serve three months in prison because she failed to pay about $1 million in taxes over the past decade. Hill was sentenced at a court in Newark, New Jersey yesterday - her punishment for a guilty plea to charges of failing to pay taxes on nearly $2 million earned between 2005 and 2007. The sentence also takes into account unpaid state and federal taxes in 2008 and 2009 that brought the total earnings to about $2.3 million. Hill paid more than $900,000 in taxes in the past several days - but the Feds say she still owes interest and penalties. Hill is to report to prison by July 8. It's unclear where she will serve her sentence.