In a score sheet, what does a double barline represent? the end of a composition the end of a section of music the beginning of a composition the pitch of a composition

I am thinking C: the beginning of a composition the pitch of a composition
A double barline happens
Before a key change During an overall change of style; or before a chorus or bridge Before changing the time signature mid-line. If the change occurs mid-measure, a dotted double bar is used; see image.