When an artist so thoroughly changes the rules that she makes it hard to remember what it was like before she was on the scene, it's safe to say that she can be called "definitive."

With her third album, "Mama's Gun," Motown artist Erykah Badu is again defining the highest creative potential of music.

Erykah Badu fuses the jazz, R&B an hip-hop influences of a lifetime, and does so not only with her voice, but with many talents: writing, producing, directing, poetry, dance, drama, and visual arts.