Former Fugees member Lauryn Hill is celebrating her release from prison with a new single.

The R&B singer was jailed in Connecticut in July after pleading guilty to three charges of failing to file her tax returns between 2005 and 2007.

The 38 year-old star, who is set to leave prison on Friday after completing her three-month sentence, is marking the occasion by releasing a new track, Consumerism, which will also feature on her upcoming album Letters From Exile.

In a post on her Tumblr page, Hill writes, "Consumerism is part of some material I was trying to finish before I had to come in... I felt the need to discuss the underlying socio-political, cultural paradigm as I saw it.

"I haven't been able to watch the news too much recently, so I'm not hip on everything going on. But inspiration of this sort is a kind of news in and of itself, and often times contains an urgency that precedes what happens.

"I couldn't imagine it not being relevant. Messages like these I imagine find their audience, or their audience finds them, like water seeking it's level."

Following her release, Hill will still have to spend a further three months under house arrest and nine months on supervised release.