4. (b) The following come under the title of sacred music here: Gregorian chant, sacred polyphony in its various forms both ancient and modern, sacred music for the organ and other approved instruments, and sacred popular music, be it liturgical or simply religious.3
[3] Cf. Instruction of the S.C.R., September 3, 1958, n. 4.
4. "Sacred music" includes the following: a) Gregorian chant; b) sacred polyphony; c) modern sacred music; d) sacred organ music; e) hymns; and f) religious music.
10. Religious music is any music which, either by the intention of the composer or by the subject or purpose of the composition, serves to arouse devotion, and religious sentiments. Such music "is an effective aid to religion" (Musicæ sacræ disciplina, idem.). But since it was not intended for divine worship, and was composed in a free style, it is not to be used during liturgical ceremonies.
10. Religious music is any music which, either by the intention of the composer or by the subject or purpose of the composition, serves to arouse devotion, and religious sentiments. Such music "is an effective aid to religion" (Musicæ sacræ disciplina, idem.). But since it was not intended for divine worship, and was composed in a free style, it is not to be used during liturgical ceremonies.
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