What is the main characteristic of idiomatic writing in music?

Idiomatic writing in music refers to compositions that are specifically tailored to the unique characteristics and capabilities of specific instruments. This involves understanding the range, timbre, and technical possibilities of an instrument, allowing composers to create parts that are effective and resonate well with the instrument’s strengths.

When a composer writes idiomatically, they exploit the distinctive sound and techniques available to the instrument, whether it's the nuances in tone, articulation, or the physical limitations of playing. This results in music that is more expressive and suited to the instrument, ultimately enhancing its performance and the overall impact of the piece.