Summary

Clement A. Harris How to Write Music: Musical Orthography

A syllable will often require more space than a note, consequently in very simple music the words require more space than the music. In florid compositions a syllable, on the other hand, is often sung, not to several notes merely, but to several measures, and the music requires much more space than the words. In the former case the author has found it a good plan to write the words first, or at least a measure or two of them, as a guide in estimating their average length.
Source: Gutenberg

Clement A. Harris How to Write Music: Musical Orthography

Where, however, in vocal or instrumental music the measures vary greatly, one having, perhaps, a single whole note and the next thirty-two thirty-second notes, it is necessary to plan each score separately, or the end may be reached with too much space for the last measure, but not enough for another one. Carrying a measure from the end of one score to the beginning of the next is not practised now, as it once was.
Source: Gutenberg

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