How do you differentiate beyonce and sasha fierce?  

I don't think it's necessarily a split personality I think Sasha fierce is a personality that comes out when she is performing, she does seem sweet and calm, and innocent in her regular life but on stage you really do see a fierceness that comes out in her performances. It's just like Michael Jackson, when he performed its a total different person that that child-like personality he displays when not performing, maybe it's an alto ego or split personality but you got to admit, it's really good

In terms of their songs. rihanna's song suicidal, the songs are dark. Sasha Fierce talks about inspiring women or even men.

Hi, nafmdt. I don't think that it is an indication of Beyonce having a split personality. It is just her wild side that is coming out and letting loose. I am sure that we all have a different side to us. One that we keep hidden and the other one that we show to the world. It is just another part of our personalities.