Which Beyoncé album was released in 2008 as a double album with the alter ego Sasha Fierce?

Beyoncé’s 2008 double album built around the alter ego Sasha Fierce was I Am... Sasha Fierce.

The album was released on November 14, 2008, and was structured as two discs. “I Am...” emphasized more personal and emotionally direct songs, while “Sasha Fierce” presented a more assertive performance persona that Beyoncé described as an alter ego used onstage.

The project included “If I Were a Boy,” “Single Ladies (Put a Ring on It),” “Halo,” and “Diva.” These songs showed the contrast between ballads and high-energy pop and R&B performances that shaped the album’s concept.

The title is sometimes shortened informally, but the official styling includes the ellipsis and the name Sasha Fierce. The album earned multiple Grammy nominations and helped make “Single Ladies” one of Beyoncé’s most widely recognized songs.