It may be that Amy Winehouse, emerging from her latest stay in rehab earlier this month, missed being in the spotlight for her outrageous behavior. That certainly would explain this weekend's performance in Belgrade, Serbia, which began with a seemingly intoxicated Winehouse greeting the crowd of 20,000 with a slurred Hello, Athens! 

In what was dubbed by local papers as the 'the worst [concert] in the history of Belgrade,' the 27 year old pop star spent nearly an hour and a half hugging herself, taking off her shoes, and forgetting the lyrics and tunes to some of her biggest hits. 

The failed kickoff concert on her comeback tour certainly gives new merit to her Rehab lyrics, When I come back, you'll know, know, know. It was quickly labeled a scandal and a disaster by audience members who had spent more than ten percent of their monthly income on tickets to the much anticipated concert. Even the Serbian defense minister Dragan Šutanovac came out on Facebook, calling the performance 'a shame.'

Winehouse found herself, yet again, having to apologize for her actions.

Two upcoming performances on the twelve date tour, one in Istanbul and the other in Athens, have been cancelled. 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 would like to apologize to fans expecting to see her at the shows but feels that this is the right thing to do, said a statement issued by her agent, in an attempt to placate disappointed and angry fans. She was thought to have been demanding payment for the failed Saturday performance, but it seems as if she no longer will be seeking compensation, according to a spokesperson.

The English born singer has been the focus of such scandals throughout her career, often battling drug and alcohol addiction. From her multiple stints in rehab to her famous hit single 'Rehab,' Winehouse's popularity comes despite - or perhaps because of - her almost humorous inability to stay on the straight and narrow.

 As of now, Winehouse is still scheduled to perform in Spain on July 8.