| Answer | Crossword Clue |
|---|---|
| trombones | An organ stop with the quality of such an instrument |
| electrophone | any instrument whose sound is produced by the oscillation of an electric current, such as an electronic organ, synthesizer, etc |
| electrophones | ELECTROPHONE, any instrument whose sound is produced by the oscillation of an electric current, such as an electronic organ, synthesizer, etc |
| trumpets | An organ reed stop with a quality resembling that of a trumpet |
| integrator | An instrument for indicating or registering the total amount or mean value of some physical quality such as area or temperature |
| principals | An organ stop sounding a main register of open flue pipes typically an octave above the diapason |
