Final answer:
The four categories used to discuss non-western instruments are aerophones, chordophones, membranophones, and idiophones.
Step-by-step explanation:
In ethnomusicology, the study of music in world cultures, there are four common categories used to discuss non-western instruments:
- Aerophones: These are wind instruments, such as flutes and trumpets.
- Chordophones: These are stringed instruments, such as guitars and violins.
- Membranophones: These are instruments with a membrane, such as drums.
- Idiophones: These are self-sounding instruments, such as xylophones and maracas.