Related Clues:

• Op-ed piece
• Melody
• ''Civil Disobedience,'' e.g.
• Give an account of
• Endeavor
• Piece of Bacon?
• Recurring melody
• Emerson product
• Subject
• Show up for duty
• Homework assignment, sometimes
• Basis of a musical composition
• Present oneself
• Main idea
• Schoolboy's grammatical exercise