#organ_pipe__organpipe__pipe__pipework  the flues and stops on a pipe organ
  supertype:  wind_instrument__wind  a musical instrument in which the sound is produced by an enclosed column of air that is moved by the breath
  part of:  pipe_organ
  subtype:  flue_pipe__flue__labial_pipe  organ pipe whose tone is produced by air passing across the sharp edge of a fissure or lip
  subtype:  organ_stop__organstop  a graduated set of organ pipes of like tone quality
     subtype:  diapason_stop__diapason  either of the two main stops on a pipe organ
     subtype:  dulciana  the organ stop having a tone of soft sweet string quality
     subtype:  flue_stop  an organ stop with the tone of a flue pipe
     subtype:  reed_stop  an organ stop with the tone of a reed instrument
        subtype:  vox_humana__voxhumana  an organ reed stop producing tones imitative of the human voice
     subtype:  sourdine  an organ stop resulting in a soft muted sound
     subtype:  vox_angelica__voxangelica__voix_celeste  an organ stop producing a gentle tremolo effect
  subtype:  reed_pipe  organ pipe with a vibrating reed

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