"Instrumental" refers to music that primarily features instruments rather than vocals. This genre can encompass various styles, including classical, jazz, rock, and electronic. Instrumental music often highlights the skill of musicians and the unique sounds of different instruments, allowing listeners to appreciate the melodies and harmonies without the influence of lyrics. In addition to music, the term "instrumental" can also describe something that plays a crucial role in achieving a particular outcome. For example, a person might be instrumental in a project, meaning they significantly contribute to its success. This usage emphasizes the importance of certain elements in reaching a goal.