Amy Winehouse blamed her drug habit on the devil during a furious rant. The troubled singer - bizarrely dressed in only skimpy black shorts and a lace bra - was in a West London recording studio attempting to pen tracks for her forthcoming third album when she became incensed at her uninspired efforts.
Amy, 25, only managed to play a repetitive tune using two notes on her $5,000 guitar and eventually became so frustrated she smashed up the instrument and began screeching that Satan was giving her drugs.
An eyewitness said: "She lost it."
This latest incident has prompted fears for Amy's mental health again.
Earlier this month, it was reported she had threatened to kill herself with a knife because she was missing her incarcerated husband Blake Fielder-Civil, who is currently serving a 27-month sentence for grievous bodily harm and perverting the course of justice.
Last month, the "Rehab" singer made a shambolic appearance at London's Berkeley Square Ball - an annual charity event in aid of The Prince's Trust.
Amy was supposed to sing backing vocals for her 12-year-old goddaughter Dionne - who was performing at the event in a bid to launch her music career - but only managed to mumble a few words.
Later, she reportedly hit out at a fan who asked for an autograph.
She was heard sobbing: "This isn't a life - it's a mess. Life can't go on. I can't do this any more."
Meanwhile, Mark Ronson has revealed the name of the track he and Amy are covering for a tribute album to legendary producer Quincy Jones.
The pair are lending their talents to "You Don't Own Me," which was originally a hit for 60s singer Leslie Gore.
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