Beyonce finally admits Obama song wasn't live

The 31-year-old star said she was a "perfectionist" and sang over a pre-recorded track last week in order to make her country "proud".

She said: "I practise until my feet bleed and I did not have time to rehearse with the orchestra.

"I did not feel comfortable taking a risk. It was about the President and the inauguration, and I wanted to make him and my country proud, so I decided to sing along with my pre-recorded track, which is very common in the music industry.

"I'm proud of my performance."