INGLEWOOD, CALIFORNIA - JANUARY 16: (L-R) Kim Thayil and Ben Shepherd of Soundgarden perform onstage ... More during I Am The Highway: A Tribute To Chris Cornell at The Forum on January 16, 2019 ...

'Nothing Compares' director Kathryn Ferguson on Sinead O'Connor's controversial SNL appearance, her legacy, and the unfinished album she left behind.

Before her tragic death Saturday, Amy Winehouse had been working on a third album — a follow-up to her Grammy-winning hit Back to Black — that she was planning to release next year.