| Answer | Crossword Clue |
|---|---|
| dulcets | organ stop resembling the dulciana but an octave higher |
| dulcet | organ stop resembling the dulciana but an octave higher |
| superoctave | an organ coupler giving an octave higher; an organ stop two octaves above the basic pitch |
| superoctaves | SUPEROCTAVE, an organ coupler giving an octave higher; an organ stop two octaves above the basic pitch |
| principals | An organ stop sounding a main register of open flue pipes typically an octave above the diapason |
| calliopes | A keyboard instrument resembling an organ but with the notes produced by steam whistles, used chiefly on showboats and in traveling fairs |
