Backstory Bass guitarist Colin Wolfe was first hired by Dre at Ruthless Records for its R&B singer Michel'le. Wolfe played the bassline also on Dre's debut solo single, "Deep Cover." In 2014, Wolfe recalled, "One day, I was alone in the control room and Dre and Daz were up in the back room, trying to mess around on the keyboard for the 'Bitches Ain't Shit' bass line. So I stepped in the doorway and I could hear what they were trying to do. I said, 'Man, look out, y'all trying to do this.' I straight did it, recorded it, and then I was like, 'Yo, I got another part,' and did the high Moog part right after that." Via the funk group Ohio Players' 1972 single "Funky Worm," such a "high Moog part" is nicknamed "the funky worm" and made on a Moog synthesizer, also behind Bernie Worrell's otherworldly P-Funk sounds. With N.W.A, Dre released two songs employing it—Ice Cube, in 1987, rapping "Dope Man," and Dre with MC Ren, in 1991, rapping "Alwayz into Somethin' "—a signature sound of The Chronic. A leading record producer of 1980s pop rock, Jimmy Iovine, who granted the album major distribution, recalls, "Dre's sonics just sounded better than anything else on my speakers." Vocals Backstory Dre's verse was written by the D.O.C., his usual ghostwriter, a rapper whom Dre discovered in Dallas, and who helped Dre form Death Row Records. The four "Bitches Ain't Shit" guest vocalists, unsigned and poor, frequented the studio like a social club. Snoop's circle brought his younger cousin Daz and Kurupt—soon a rap duo, Tha Dogg Pound—while R&B singer Jewell, already present, hereby pioneered women's singing on gangsta rap. Yet most prominent is Snoop. In early 1991, Dre drew Snoop, who would turn 20 in October, from the Long Beach, California, trio 213: Snoop, his cousin Nate Dogg, singer, and Warren G, producer and rapper, stepbrother of Dre. In April 1992, unheard since N.W.A's May 1991 album and breakup, Dr. Dre reemerged by a debut solo single—title track of the film Deep Cover—while debuting a guest but in essence lead rapper, Snoop Doggy Dogg. Despite intense anticipation for Snoop, his album recorded awaited release Dre's, which largely doubled as Snoop's debut album. Early on, working with Snoop to write the "Nuthin' but a 'G' Thang" lyrics, the D.O.C. focused, beyond Dre's verses, on imparting to Snoop, already gifted,