Amy Winehouse records 'Back to Black' with Mark Ronson in poignant new clip from Amy

The late singer-songwriter clearly had no idea just how talented she was

Amy Winehouse records 'Back to Black' in Asif Kapadia's new documentary

Amy Winehouse's raw talent is on stunning display in the latest clip from hit documentary Amy, showing her recording the bluesy "Back to Black" with producer Mark Ronson.

The late singer-songwriter, who died from alcohol poisoning aged just 27 four years ago, is seen working on her Grammy-winning album in New York and describing her creative process.

"I had these feelings and words floating around in me," Amy says in her famous North London accent.

"When you write a song you have to remember how you felt, you have to remember what the weather was like, you have to remember what his neck smelled like. You have to remember all of it."

Dressed casually in denim shorts and an unbuttoned bright red shirt, she wrote the devastating lyrics and melody in just a few hours.

"Oh, it's a bit upsetting at the end innit?" she says with a grin before wandering off, whistling, like it was just another day in the office.

This is a stand-out moment from Asif Kapadia's new film, which broke the record for the highest UK opening of a British documentary last weekend.

The director, best known for Senna, said recently that he stumbled upon the "Back to Black" footage "purely by chance" after hearing a rumour that someone had been filming the session.

Ronson has praised Amy for revealing a side to the artist that "not everyone got to see". "There was nothing pretentious about her," he told The Mirror.

"She had a gift and a talent and then she ended up becoming a runaway success that led to some unfortunate things happening."

Amy Winehouse performing with Mark Ronson at the 2008 Brit Awards (Reuters)

Kapadia told The Independent last month that he wanted to show "the young, fun, happy, bright-eyed healthy girl [Amy] used to be".

"You think it would have been to have met her," he said. "She would have been fun to hang out with."