An idiophone is any musical instrument that creates the sound primarily by the instrument as a whole. Vibrating with out the use of strings or membranes. The early classification of Victor-Charles Mahillon called this group of instruments autophones.

Most percussion instruments that are not drums are idiophones. Hornbostel-Sachs classifies idiophones into four main sub-categories. The first division is the struck idiophones, sometimes called concussion idiophones.

This includes most of the non-drum percussion instruments familiar in the West. They include all idiophones made to vibrate by being struck, either directly with a stick or hand like the wood block, singing bowl, steel tongue drum, triangle or marimba or indirectly, by way of a scraping or shaking motion (like maracas or flexatone). Various types of bells fall into both categories.

Idiophones / Hornbostel Sachs No#:
Numbers Category Type Instruments
111.1 Concussion    
111.2 Percussion    
112.1 Percussion Shaken Chekere
112.2 Percussion Scraped Guiro
121.1 Frame Clack  
121.2 Lamellahones Guimbardes Jaw-Harps
122.1 Plucked Comb Mbira
122.2   Cut out  
    Friction  / Musical Saw
    Vessel Glass harp

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