Which rapper released the 1999 album Black on Both Sides?

Mos Def released the 1999 album Black on Both Sides.

Black on Both Sides was Mos Def’s debut solo studio album and was released on October 12, 1999. Before going solo, he had worked with Talib Kweli as Black Star and had appeared in the wider underground hip-hop scene.

The album blends socially conscious writing, personal reflection, jazz-influenced production, and more aggressive performances. Songs such as “Ms. Fat Booty,” “Mathematics,” and “Umi Says” show the range that made Mos Def an important late-1990s lyricist.

Mos Def later adopted the name Yasiin Bey, which can cause confusion in questions about his catalog. Black on Both Sides was released under the name Mos Def, while Black Star refers to his duo with Talib Kweli.