Sources close to Amy Winehouse revealed Thursday that there are at least twelve unreleased tracks she had been working on before she passed away last Saturday, but a decision as to whether to release the music has not been made.  It is not immediately clear how finished the tracks are, but there's no doubt that there would be demand for more material from the fallen star. 

Winehouse only released two albums in her eight year career, and her death sparked a surge in those records' sales.  In the two days after her body was found in her London apartment, Winehouse sold more albums than she had in the entire first half of the year, and Britain's Official Charts Company is expecting seven Winehouse singles to make this week's top 40, scheduled to be announced Sunday.

Posthumous releases are tricky business.  Sometimes, as in the case of Michael Jackson, they can boost an artist's legacy, and sell alot of albums in the process.  But then there's cases like folk rock singer Jeff Buckley, who tragically drowned in 1997 after having released just one album.  His estate has allowed for a number of releases since his death, and none of them has had a positive impact in his legacy.  The same was true with Jimi Hendrix's posthumously released records, though he had released enough iconic material that his legacy wasn't marred.

There is one Amy Winehouse song that is expected to be released, however, a duet with Tony Bennett of the pop standard "Body and Soul" recorded in March for an upcoming duets compilation.  As for the rest of the material, Winehouse's label has so far not commented, nor has her family.