| Answer | Crossword Clue |
|---|---|
| AMINOR | Key lacking black keys |
| CMAJOR | Key with no black keys |
| FLATS | Black keys, in some key signatures |
| BMAJ | Key using all the black keys: Abbr. |
| BMAJ | Key using all five black keys in its scale: Abbr. |
| DFLAT | Major key that uses all five black keys on a piano |
