keywork
Noun
Meaning
(music) Collectively, the mechanisms of a woodwind musical instrument such as a flute or clarinet that support the operation of its keys.
(UK) The form of social work done by a keyworker.
Source: en.wiktionary.orgExamples
A modern oboe with the "full conservatoire" ("conservatory" in the US) or Gillet key system has 45 pieces of keywork, with the possible additions of a third octave key and alternate (left little finger) F- or C-key.
Over time, additional keywork and airtight pads were added to improve the tone and playability.
Sax's patent expired in 1866; citation thereafter, numerous saxophonists and instrument manufacturers implemented their own improvements to the design and keywork.
There are also modern wooden bodies instruments usually with silver or gold keywork.
This enables a chromatic scale to be played over two octaves simply by playing the diatonic scale combined with alternately raising and lowering this one digit. citation However, this keywork never gained much popularity, and is no longer in use.