staves as are performed simultaneously: two in pianoforte music, three in organ music, four in an unaccompanied quartet, six in four-part vocal music with piano accompaniment, and so on. These staves have a line drawn down their left-hand edge. Hence the name, from their being scored through.
Their position always being at the left-hand edge of the staves, and their length determined by the number of staves, they may be drawn before the length of the measures has been arranged.
Care must be taken when a page is ruled at a time not to draw the score-line through more than the necessary number of staves. Except in a full score there will generally be at least two, and, of course, very often more, scores to the page.
Barring4.—After the score-lines come the bar-lines. And with the arranging of these begins that careful mapping-out of the whole work, neglect of which will lead to endless annoyance and dissatisfaction.
Some music is so uniform that a given space may be assigned to each measure, and consequently a uniform number of measures to each score, provided that there is no change of key or time. In determining this space allowance must be made (1) in the first measure of each movement for the key and time signatures, which may require a considerable space; (2) in the first measure of each score for the key
