The drives were in the "Thriller" singer's rented Holmby Hills, Calif., mansion when he died suddenly in June. Hours afterward, the family descended on the house to claim all its contents, and LaToya grabbed the drives, Rolling Stone said, quoting the late singer's manager, Frank DiLeo.

DiLeo told Rolling Stone that there were at least 100 songs -- including many recorded at Jackson's 1980s peak -- that were never released, including a few "sensational" tracks that were left off "Bad," the 1987 follow-up to his blockbuster "Thriller." - more on this story

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