Amy WinehouseAmy Winehouse may be keeping herself busy working on her new album but the subject matter of many of the songs is reportedly worrying some of her friends.

While ‘Back to Black’ was about her lost love, inside sources claim many of her new songs are about death and show her current state of depression.

A source told the Sun: “Her next album is darker than ever. She’s written quite a lot of [it] already.”

“It is very, very dark but she produces some of her best music when she’s in pain - and the past few months have been hell for her.”

Aside from trips to pick up supplies at her local shops and attempted visits to see husband Blake Fielder-Civil in HMP Pentonville, the source says Amy is barely leaving her home: “Amy’s got low self-esteem anyway but her skin has made her want to hide away from the rest of the world. And we have started noticing more and more cuts on her arms.”

“Her problems are pushing her over the edge and she’s turning into a depressed recluse. It’s not good for her to stay in so much.”

“People try to get her to leave the house and tell her not to worry about what people say. But she’d rather sit around her dingy flat all day writing about death.”

“She might have all this fame and wealth but she’s never been so down as she is now.”

Husband Blake is also reportedly threatening Amy with divorce again after she’s repeatedly missed visiting slots: “He’s having a hard time in jail because of who he’s married to and gets wound up because Amy keeps missing visits or gets turned away for being late.”

“There’s no excuse for her to miss visits. We think she does it on purpose sometimes because she doesn’t want to see him.”

“Amy’s real friends are hoping that he follows through with the threats to divorce her.”