Final answer:
An individual part or line in instrumental music is typically referred to as a 'voice' or 'part.' These musical elements combine to form the melody and harmony, constructed from notes like A-sharp, C, or E-flat.
Step-by-step explanation:
An individual part or line, even in instrumental music, is often referred to as a voice or part. In music, a voice or part represents a single line of music that is to be sung or played by one performer or set of similar instruments in the case of ensemble music. This concept is akin to a line in poetry, which runs horizontally across a page, but in music, it usually refers to melodies or harmonies that interweave with each other to produce the texture of a musical piece.
We can see that different musical elements such as melody, harmony, and rhythm are composed of musical notes, which are the basic units with specific names like A-sharp, C, or E-flat. A memorable example of learning musical notes is the phrase "Every good boy does fine," which helps piano students remember the notes E, G, B, D, and F for the lines of the treble clef. These different musical lines or voices combine to generate the overall sound of a piece, with the number and relative intensity of multiple frequencies creating the harmonious or dissonant effects that characterize different musical styles.