The line of music is refered to as the bracket
<h3>What is music?</h3>
It should be noted that music simply means a vocal or instrumental sounds that are combined to produce beauty of harmony and expression if emotions.
When When both of these staves are connected with this symbol, it's called a brace.
Lastly, the things inside the box are voice, piano, and guitar.
Learn more about music on:
brainly.com/question/26373912
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