The whole of Veterum Sapientia, from 1961, by Pope John XXIII; it was issued shortly before the Council was opened.
Sacrosanctum Concilium (Vatican II document on the liturgy) n. 36/1 and n. 54.
Inter Oecumenici n. 59, from 1964, the first instruction on the implementation of SC.
Voluntati Obsequens and Jubilate Deo, from 1974, by Pope Paul VI; the first was a note accompanying the second, which was a minimal repertoire of Gregorian chant for use in parishes.
Sacramentum Caritatis n. 62, from 2007, by Pope Benedict XVI.
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