Audi nos, Rex Christe. Anon. [Processional.] First published from a manuscript of the 11th century, at Clermont, by Du Méril, in his Poésies Populaires Latines du moyen age, Paris, 1847, pp. 56-58, together with an extensive note. The text was repeated by Daniel, iv. p. 171, with reference to Du Méril. It is a Pilgrim's song, and as such it might be used as a Processional. Dr. Neale has printed Du Méril's text (without the various readings) in his Hymni Ecclesiae, 1851, p. 227; and Mr. Ellerton (with the readings) in his Notes on Church Hymns, 1881, No. 440, where he falls into the error of giving the date of the first, 1843, instead of the second, 1847, volume of Du Méril's work. [Rev. W. A. Shoults, B.D.]
Translations in common use:-—
1. 0 Christ, our King, give ear. By J. M. Neale, first published in his Mediaeval Hymns, 1851, in 8 stanzas of 3 lines, including the chorus. The Society from Promoting Christian Knowledge Church Hymns, 1871, No. 440, omits the chorus and stanza ii.
2. 0 blessed Trinity, No. 299, in the Hymnary, is Dr. Neale's rendering expanded into 7 stanzas of 6 lines. It was designed as a Processional for the Rogation Days.
-- John Julian, Dictionary of Hymnology (1907)