Editorial Procedure
Editorial intervention has been kept to a minimum. Clefs have been modernized for voice parts only; the original clefs are indicated at the outset of each piece, along with the original key signature and meter, if any. For ease of reading, key signatures have usually been added when they are implied by the sources. Original note values have been maintained. An attempt has been made to regularize the barring. Thus, while pieces are generally barred according to the source, where additional bar-lines are required these are dotted. Changes of meter are provided where maintaining the same meter would produce measures of irregular, inconsistent length. Editorial accidentals as well as notes missing in the sources are enclosed in brackets. All expression and tempo markings are original and are indicated in italics. Figures are generally those in the sources. Occasionally a figure is added in brackets where the harmony might otherwise be ambiguous.
Poetic texts in the musical examples follow those of the manuscript sources; they have not been altered to conform to the texts quoted from the librettos. Punctuation has been clarified, however, and abbreviations have been expanded. In addition, the beginning of each poetic line has been marked by capitalizing its initial letter. In quoting from librettos and manuscript documents, I have chosen to retain the original capitalization and punctuation as well as spelling. Occasionally, however, punctuation and accents have been added to clarify the meaning.