The act or process of joining or pairing things together; a coupling or connection between two things.
From 'couple' + '-ment' (abstract noun suffix). An archaic or rare variant of 'coupling,' this term was more common in Middle English but survives in specialized or poetic contexts.
In classical music theory, the 'couplement' of different instrumental voices—how they're joined together—is fundamental to orchestral sound, though composers typically use the term 'coupling' today.
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