Beyoncé’s alter ego on the two-disc 2008 album I Am... Sasha Fierce is named Sasha Fierce.
I Am... Sasha Fierce was released on November 12, 2008, as Beyoncé’s third solo studio album. The two-disc structure separates its musical ideas: I Am contains more personal and ballad-oriented songs, while Sasha Fierce presents a more confident, energetic performance persona. Beyoncé described Sasha Fierce as an alter ego she used onstage.
The album includes “If I Were a Boy,” “Halo,” “Diva,” and “Single Ladies (Put a Ring on It).” It became one of Beyoncé’s most commercially successful releases and produced several globally recognized singles.
Sasha Fierce is not Beyoncé’s legal name, a separate singer, or the name of a group. It is a performance identity associated particularly with the album’s second disc and with Beyoncé’s description of how she approached stage performances.