How does vocal music differ from instrumental music?

Vocal music is defined as any genre created for solo voice or combinations of voices, which may be performed with or without instrumental accompaniment. While instrumental music relies on devices such as strings, winds, or percussion to produce sound, vocal music is produced by the human body, specifically through the vibration of vocal cords in the larynx as air from the lungs passes through them.12

Historically, the distinction between the two has often been fluid. In the Middle Ages, for example, instruments were frequently used to support singing, and the line between sacred vocal music and secular instrumental performance was often thin. By the 14th century, as secular music gained prominence, instrumental music began to flourish independently, and composers often utilized instruments to perform lower vocal lines that were difficult to sing. Despite these overlaps, vocal music remains distinct in its reliance on the human voice as the primary sound source, often incorporating language and text, whereas instrumental music focuses on the technical capabilities of musical instruments.314