British singer Amy Winehouse performs du

"All I'm good for is making music," Amy Winehouse says in the new full-length trailer for a documentary about the late singer.

That's just one of several statements made in the "Amy" trailer that give it such a haunting quality. Directed by Asif Kapadia ("Senna"), the doc traces the British singer's highs — winning a Grammy, performing for thousands — and lows, up to her 2011 death at the age of 27 from alcohol poisoning.

The song used in the trailer — "Back to Black," written about her breakup with ex-husband Blake Fielder-Civil — is a stark and mournful reminder of how talented Winehouse was, but also how dark her life could be.

The documentary has generated controversy, with Winehouse's family criticizing it for being "unbalanced." Reg Traviss, Winehouse's fiance at the time of her death, called it a "distorted depiction of Amy's life."

"Amy" opens in limited release on July 3.

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