Amy Winehouse appeared at a Belgrade concert Saturday more than an hour late and seemingly drunk. The 27-year-old well-established train wreck abandoned the stage repeatedly, forgot lyrics, and dropped the microphone. Winehouse canceled scheduled appearances in Turkey and Greece.

Her spokesperson said in a statement, “Despite feeling sure that she wanted to fulfill these commitments, she has agreed with management that she cannot perform to the best of her ability and will return home.” She added, “She would like to apologize to fans expecting to see her at the shows but feels that this is the right thing to do.”

The Associated Press reported that the young singer “Was booed and jeered during a concert in Serbia’s capital as she stumbled onto the stage, mumbled through her songs and wandered off.” Winehouse also threw a shoe into the crowd.

Winehouse, perhaps best known for her song ‘Rehab,’ has been long known to frequent such facilities. Winehouse’s relentless substance abuse and self-destrucive behavior escalated in August 2007 when she was hospitalized for a heroin, ecstasy, cocaine, ketamine, and alcohol overdose.

In an October 2010 interview, Winehouse announced that she had been sober for three years. She said, “I literally woke up one day and was like, ‘I don’t want to do this any more.”

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