- MIDDLEC
- Piano key
- Note at about 261.63 hertz
- Central note
- Pianist's starting place
- Piano-lesson reference point
- Key piano key
- Lowest note playable on a standard flute
- Critical tone
- Keyboard center
- Its frequency is 262 Hz
- Piano keyboard center
- Oft-referenced note
- Centrally located note
- Important key (and key to this puzzle's theme)
- Piano benchmark, and a feature of 16-, 22-, 51- and 61-Across
- Place to start for a young music student
- Good note for beginners to start on
- Keyboard centerpiece, and a phonetic hint to six long puzzle answers
- Important piano key
- Piano student's key note
- Reference note for a certain sitter
- Musical note.
- Piano primer reference point
- Starting point for a piano student, or a phonetic hint to 17-, 18-, 22-, 33-, 41-, 49- and 55-Across
- Reference point during a piano lesson
- Key key
- Its frequency is about 262 hertz
- Piano student's reference point
- Reference note
- First note learned on the piano, and a homophonic hint to the starred answers
- Reference point during piano lessons
