Related Clues:
- Not much music from piano teacher
- Observe; short letter
- Significant mark in flat perhaps
- Memo ''to self''
- Pay attention to liberal Tone
- Make a memo of
- Fridge posting
- It can follow the starts of 17-, 32-, 41- and 59-Across
- Business card word
- Sticky thing around the office
- School jotting
- Obsolescent means of communication
- Musician's jotting
- Chord part
- Give heed to