Last week during Oprah's 'Farewell Spectacular,' Beyonce performed her single, Run the World (Girls).

Before the performance, Beyonce said: Oprah Winfrey, because of you, women everywhere have graduated to a new level of understanding of what we are, of who we are, and most importantly who we can be. Run the world, Oprah.

We can run the world!

Oprah and 13,00 adoring fans danced and smiled in the crowd as Beyonce performed.

Despite fan admiration, the single has stirred some mild controversy. Critics have picked at it for its sample use from Major Lazor's 'Pon de Floor.'

Also, her recent performance at the 2011 Billboard Music Awards spawned criticism that she copied a 2010 performance by Italian singer Lorella Cuccarini, to which Beyonce responded: My makeup artist showed me the performance of Lorella Cuccarini an a year ago, and it inspired me so much, she told AOL Music. 

I never worked so hard on anything in my life as that performance for the Billboard Awards, she added. 

Now, Beyonce's new single has leaked. Tell us what you think of 'Till The End of Time.'

Watch the video of her Billboard performance (below).