Related Clues:

• It may be sharp
• Message from the teacher
• Musical scale unit
• See 11 Across
• Staff character
• Message passed in class
• Score component
• Little letter
• "Half," "quarter" or "eighth" follower
• It can go flat
• Eff or Gee
• A through G, but not H
• 'Consider ...'
• Quick jotting
• A or E, but not I, O or U