Related Clues:

• Big burden
• Music genre and this puzzle's theme
• Military obligation
• One of hip-hop's sounds
• Ludacris output
• Word with sheet or session
• Albatross
• Forgive
• Millstone, e.g.
• Onus
• Worrysome thing
• Talk in the '60s?
• The Game's game
• Grandmaster Flash's music genre
• Binding obligation