Related Clues:

• Item passed in class
• A whole one has no stem
• Hemidemisemiquaver, for one
• One given a staff position?
• Scoring unit
• Short message
• Sound of music
• Band's bar
• One on a musical scale
• Brief missive
• Musical production
• Scoreboard unit
• See 10 Across
• Brief reminder
• Use one's index finger, perhaps