"Single Ladies (Put a Ring on It)" is a song recorded by American singer Beyoncé for her third studio album, I Am... Sasha Fierce (2008). It was released by Columbia Records on October 13, 2008, as the album's lead single alongside "If I Were a Boy", showcasing the contrast between Beyoncé's persona as herself and her aggressive onstage alter ego Sasha Fierce.
http://en.wikipedia.org/wiki/Single_Ladies_(Put_a_Ring_on_It)
http://en.wikipedia.org/wiki/I_Am..._Sasha_Fierce_(album)
http://en.wikipedia.org/wiki/Beyoncé
http://en.wikipedia.org/wiki/Single_Ladies_(Put_a_Ring_on_It)
http://en.wikipedia.org/wiki/I_Am..._Sasha_Fierce_(album)
http://en.wikipedia.org/wiki/Beyoncé