Somehow Amy Winehouse’s one week in rehab was not the life-changing fresh start you may have expected. The soul slurrer’s much-vaunted, long-delayed “comeback” tour has already had some of its dates canceled, a decision made in the wake of a Serbian kick-off show that has been deemed “the worst in the history of Belgrade,” a city that knows a thing or two about bombing. According to numerous reports, Winehouse stumbled to the stage nearly an hour late to perform a set marked by forgotten lyrics (despite reading them from a teleprompter), mumbled words, and frequent disappearances as she dropped the microphone and simply wandered off while her band kept playing.