The keyboard of a musical instrument, especially a harpsichord, clavichord, or organ; or the arrangement of keys on such an instrument.
From French 'claviature,' from 'clavier' (keyboard), from Latin 'clavis' (key). Emerged in Renaissance musical terminology.
Renaissance and Baroque composers had to think carefully about claviature—different keyboard instruments had different key arrangements and capabilities, which directly shaped what music they could write.
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