Related Clues:

• Ludacris's music
• Freestyle, maybe
• Contractor's detail, briefly
• Sharp knock
• Freestyle, perhaps
• Snoop Dogg's music
• On __ (without a contract)
• Take it or beat it
• Specification, colloquially
• Risky business, for short
• Emulate Eminem
• Music also called hip-hop
• Mfr.'s detail
• Many authors write on it
• Jay-Z's style