An attempt was made to purify Catholic Church music as a result of the?

Answer 1

deliberations of the Council of Trent

Roman Catholic AnswerThis has been an ongoing battle in the Church for centuries. Pope Saint Pius X made a valiant effort at re-establishing Gregorian Chant as the only music at Mass. Nearly every Pope since then has always made an effort in this direction. One of the more recent attempts was '''Musicam Sacram''':

from Modern Catholic Dictionary by John A. Hardon, S.J. Doubleday & Co., Inc. Garden City, NY 1980

Instruction on music in the liturgy of the Sacred Congregation of Rites. An extensive document giving general norms and applying them to every important aspect of liturgical music. Among other provisions there should be choirs, at least one or two properly trained singers especially in churches that cannot have even a small choir. The distinction between solemn, sun, and read Mass is retained; Gregorian chant should be given pride of place; adapting sacred music for regions having a musical tradition of their own requires "a very specialized preparation by experts"; and those instruments which are by common opinion "suitable for secular music only, are to be altogether prohibited from every liturgical celebration and from popular devotions" (March 5, 1967).