Amy Winehouse found dead

British singer Amy Winehouse has been found dead at her home in north London. The 27-year-old, who has had a long battle with drink and drugs, was discovered at her apartment in Camden Square by emergency services at 3.54pm this afternoon.

The cause of death was not immediately clear. She recently spent a week at the Priory clinic in south west London. Her stay was said to be at the suggestion of her father, Mitch.

Winehouse won five Grammy Awards for her album Back to Black, but her career was overshadowed by her alcohol and drug addiction.

Last month, the singer cancelled a series of scheduled concerts following an erratic performance at a concert in Serbia.

Born in 1983 to Mitch Winehouse and his wife Janis, Winehouse grew up in the north London suburbs, and was set on a showbiz career from an early age. When she was 10, she and a friend formed a rap group, Sweet 'n' Sour — Winehouse was Sour — that she later described as "the little white Jewish Salt 'n' Pepa."

She attended the Sylvia Young Theatre School, a factory for British music and acting moppets, later went to the Brit School, a performing arts academy in the "Fame" mold, and was originally signed to "Pop Idol" svengali Simon Fuller's 19 Management.

But Winehouse was never a packaged teen star, and always resisted being pigeonholed.

Her jazz-influenced 2003 debut album, Frank, was critically praised and sold well in Britain. It earned Winehouse an Ivor Novello songwriting award, two Brit nominations and a spot on the shortlist for the Mercury Music Prize.

Frank was followed by a slump during which Winehouse broke up with her boyfriend, suffered a long period of writer's block and, she later said, smoked a lot of marijuana.

"I had writer's block for so long," she said in 2007. "And as a writer, your self-worth is literally based on the last thing you wrote. .. I used to think, 'What happened to me?'

"At one point it had been two years since the last record and (the record company) actually said to me, 'Do you even want to make another record?' I was like, 'I swear it's coming.' I said to them, 'Once I start writing I will write and write and write. But I just have to start it.'"

The album she eventually produced was a sensation.

Released in Britain in 2006, Back to Black brought Winehouse global fame. Working with producers Mark Ronson and Salaam Remi and soul-funk group the Dap-Kings, Winehouse fused soul, jazz, doo-wop and, above all, a love of the girl-groups of the early 1960s with lyrical tales of romantic obsession and emotional excess.

The album went on to win five Grammy awards, including song and record of the year for Rehab.

The songs on Black to Black detailed breakups and breakdowns with a similar frankness. Lyrically, as in life, Winehouse wore her heart on her sleeve.

"I listen to a lot of '60s music, but society is different now," Winehouse said in 2007. "I'm a young woman and I'm going to write about what I know."

Even then, Winehouse's performances were sometimes shambolic, and she admitted she is "a terrible drunk."

Increasingly, her personal life began to overshadow her career.

She acknowledged struggling with eating disorders and told a newspaper that she had been diagnosed as manic depressive but refused to take medication. Soon accounts of her erratic behavior, canceled concerts and drink- and drug-fueled nights began to multiply.

In April 2008, Winehouse was cautioned by police for assault after she slapped a man during a raucous night out.

The same year she was investigated by police, although not charged, after a tabloid newspaper published a video that appeared to show her smoking crack cocaine.

Winehouse's health often appeared fragile. In June 2008 and again in April 2010, she was taken to hospital and treated for injuries after fainting and falling at home.

Her father said she had developed the lung disease emphysema from smoking cigarettes and crack, although her spokeswoman later said Winehouse only had "early signs of what could lead to emphysema."

She left the hospital to perform at Nelson Mandela's 90th birthday concert in Hyde Park in June 2008, and at the Glastonbury festival the next day, where she received a rousing reception but scuffled with a member of the crowd. Then it was back to a London clinic for treatment, continuing the cycle of music, excess and recuperation that marked her career.

Additional reporting AP