Duccio specialized in Byzantine
I am thinking C: <span>the beginning of a composition the pitch of a composition</span>
A double barline happens
<span>Before a key change<span> During an overall change of style; or before a chorus or bridge</span><span> Before changing the time signature mid-line. If the change occurs mid-measure, a dotted double bar is used; see image.</span></span>
Answer: it really depends on what they did, if you want to, you can tell me more about it and then i will give you my opinion
Explanation: