Beyoncé 'disappointed' by negativity over anthem

Beyoncé Knowles is said to be bitterly disappointed by reaction to her performance of the American national anthem at Barack Obama's inauguration on Monday.

The 'Halo' hitmaker - who allegedly mimed 'The Star Spangled Banner' in Washington DC immediately following the president's swearing-in and speech because she only had one night to rehearse with the US Marine Corp Band before the performance - reportedly feels she did nothing wrong and the controversy has tarnished what was supposed to be a momentous occasion.