Artists, scholars and audiences in Aceh, the northernmost province of Sumatra, conceive of their percussive, wind and string instruments as symbolising Aceh's “glorious past” and attach a variety of metaphorical and analogous meanings to them. Implicit in the culture, and formulated explicitly by Acehnese scholars, is a classification that divides the instruments at the most general level into three main categories, or metaphorical socio-historical streams: those associated primarily with (i) the pre-Islamic ancestral and nature venerating (animist-Hindu) stream, practices, or presumed origins (ii) the Sunni and/or Syiah Islamic stream (including borderline cases of instruments that straddle both Islamic and animist practices), and (iii) the European or Western socio-historical stream. Organological sub-categories at the second level of categorical thinking are based on an instrument's manner of exciting sound, while the third level comprises the instrumental types with their local names. The instruments are also attributed with broader, changing sociocultural meanings, including gender and class divisions.