Related Clues:

• High C, for one
• FYI medium
• ''Didn't you get the ___?''
• Any letter from A to G
• Brief bit of correspondence
• Observe carefully
• It may stick around after the office closes
• Third of a triad
• Piano key
• Do, re, or mi
• 'You didn't get the ___?'
• Student's permission slip
• ""Name That Tune" clue
• Corporate heads-up
• "Didn't you get the __?"