Within the text of an article or review, follow CMS16, 8.167–68:
|the Musical Quarterly||the New York Times|
|published in Le monde||in his book A Short History of Music|
Stravinsky's The Firebird and Debussy's La mer
But when syntax makes the initial "the" impractical, omit it:
the Firebird premiere
"Since" in titles: Capitalize if a conjunction, but use lower case if a preposition.
In running text, omit the initial article for English-language titles of books if it does not fit the surrounding syntax (CMS16, 8.167), but retain it for foreign-language titles of newspapers and periodicals (CMS16, 8.168).
For titles within titles: If the title is in roman (for example, the head citation for a review), use italics for the internal title; if the title is in italics, surround the internal title with quotation marks.
Book title in a review heading: Stravinsky and A Rake's Progress or Book title in a footnote: Stravinsky and "A Rake's Progress"
Numbers and ampersands (&) in titles (see CMS16, 8.163):
For periodical titles, Notes generally follows the forms preferred by the publishers:
19th Century Music, not Nineteenth-Century Music (spine title), or 19th (keep th on the line, not superscript), or 19th-Century Music (no hyphen).
Music & Letters, not Music and Letters
This hymn melody is commonly called DYING STEPHEN. (not "Dying Stephen")
This anthology includes Machaut's motet De bons espoirt / Puis que la douce / Speravi and chanson De tout flours, Josquin's motet Absolom fili mi, and Merulo's twelve-voice motet "Salvum fac populum tuum" from his Sacrorum concentuum . . . liber primus.