<P> Later Sachs added a fifth category , electrophones , such as theremins , which produce sound by electronic means . Modern synthesizers and electronic instruments fall in this category . Within each category are many subgroups . The system has been criticised and revised over the years , but remains widely used by ethnomusicologists and organologists . </P>
<P> Later Sachs added a fifth category , electrophones , such as theremins , which produce sound by electronic means . Modern synthesizers and electronic instruments fall in this category . Within each category are many subgroups . The system has been criticised and revised over the years , but remains widely used by ethnomusicologists and organologists . </P>
what category of instruments do synthesizers fall in
what category of instruments do synthesizers fall in
electrophones
electrophones