Question

glossary
choral works:
music sung by a choir
composer:
a person who writes music
composition:
a written piece of music
orchestra:
a large group of musicians
that plays different
instruments together
symphony:
a long orchestral work,
usually in four parts

what does composition mean?

a written piece of music
music sung by a choir
a long orchestral work

Explanation:

To determine the meaning of "composition", we refer to the glossary provided. The glossary entry for "composition" clearly states it is "a written piece of music". The other options: "music sung by a choir" is the definition of "choral works", and "a long orchestral work" is the definition of "symphony".

Answer:

a written piece of music