Related Clues:

• Free-throw area
• A security
• Do, re or mi
• Anthem author
• Semiquaver, e.g.
• Do on a scale
• A,B,C or D
• Record, in a way
• CTRL, e.g.
• Integral
• "Defense of Fort M'Henry" writer
• Signify
• G, but not H
• One on a staff
• Decoder's tool