Trivia: Percussion instruments are organized into two groups based on what?
How many pitches they make
Their size
Their shape
How many hands are used
The correct answer is How many pitches they make
So why is this answer correct? : Orchestral percussion instruments can fit into two main categories: those that only make one pitch and those that can make more than one pitch. In the “one pitch” category are instruments like snare drums, castanets, tambourines, triangles, gongs, and cymbals. The “two pitch” category features pianos, celestas, kettle drums, xylophones, and orchestra bells.