Graduale Romanum: concupiscet rex pulchritudinem tuam. ℣. Tota decora ingreditur filia regis, texturæ aureæ sunt amictus ejus.
Missale Romanum: concupiscit rex decorem tuum. ℣. Omnis gloria ejus filiae Regis ab intus, in fimbriis aureis circumamicta varietatibus.
the Pius XII gradual for the Assumption uses the Vulgate text in the Missal but the new Bea Psalter text in the chant books

For clarification, only the older "praelium" text appears in the 1908 typical edition; it is the Urbanite "lauream" text from the Missal that was substituted in the 1920s. Note the rubric in the pages I shared from the 1953 Schwann Gradual: qui adhibeatur ad libitum. I think it means exactly that: one may sing either text as desired.one couldn't just start using them
And Vexilla:In the hands of the correctors the hymn suffered many emendations in the interest of classical exactness of phrase and metre. The corrected form is that found today in the Roman Breviary. The older form, with various manuscript readings, will be found in March (Latin Hymns, 64; with grammatical and other notes, 252), Pimont (Les Hymnes etc., III, 47-70, with a note on the authorship, 70-76), etc. The Commission on Plain Chant established by order of Pius X in many cases restored older forms of the liturgical texts. In the Gradual (the Antiphonary has not appeared as yet) the older form of the "Pange lingua" is now given, so that it can be compared with the form still used in our Breviary.
I'm hard-pressed to find any scholarship in favor of the Urbanite revisions, and it's really unfortunate that some accept the alterations as though they were the authentic tradition.It is unnecessary to indicate more in detail the changes wrought by the correctors, as our Breviaries give the revised text, and the Vatican Graduale gives the ancient text. In general, the changes made by the correctors in the Church hymns are not liked by hymnologists. Some exceptions taken by the Abbé Pimont to those made in the "Vexilla Regis" are noted in the appended bibliography. The Vatican Graduale gives plain evidence of the desire and purpose of the Commission on Plain Chant, established by Pius X, to restore the original texts. The Antiphonary (1912) gives equal evidence of an intention to retain the revised texts. Thus the Graduale (1908) gives only the ancient form of the hymn, while the Antiphonary gives only the revised form. Curiously, the Processionale (1911) gives both forms.
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