Answer: There are 5 categories/classifications of musical instruments according to Sachs Horn Bostel.
These include the following:
Electrophones, membranophones, idiphones, chordophones and electrophones.
Examples of each the above classifications are:
Chordophones: guitar and harp
Aerophones: Saxophone, flute and trumpet.
Membranophones: include vibration instruments like violin, guitar can as well fall in this category.
Electrophones: these include electronic organ
Idiphones: these may include bells, cymbals and xylophones.
Explanation:
Producers want to charge prices that at least will return all their costs: the cost of production, compensation for the time they and their employees spend on the production, and the cost of material, but in an ideal case they want to charge more so that they can earn profits.
It is naturalization
At least eighteen years old.
A lawful permanent resident of the United States.
Resident and physically present in the United States for at least five years at the time of application.
Of good moral character.
And do a oath of allegiance