There are many different ways of approaching musical instruments. One of the most common is to learn which family they belong; this is about their classification. From Ancient Chinese theories to modern ethnomusicological studies, lots of models of classification exist. Nowadays, we are familiar with the Hornbostel-Sachs System that was published in 1914 by Eric von Hornbostel and Curt Sachs, two musicologists and scholars. IDIOPHONES   MEMBRANOPHONES This system is based on a large combination of criteria such as the mode of sound production, the playing techniques and the construction materials. MIMO Update of Hornbostel-Sachs System It classifies the instruments into idiophones, membranophones, chordophones, aerophones and electrophones. Here, you have an example of this system: CHORDOPHONES AEROPHONES ELECTROPHONES