Sacrosanctum concilium
   Chap., Paragraph
 1     1,  29 | commentators, and members of the choir also exercise a genuine
 2     4,  89 |        praise when celebrated in choir, shall be adapted so that
 3     4,  89 |          to be suppressed.~e) In choir the hours of Terce, Sext,
 4     4,  89 |         be observed. But outside choir it will be lawful to select
 5     4,  95 |          celebrate the office in choir every day in addition to
 6     4,  95 |        which they do not pray in choir.~
 7     4,  96 |   Clerics not bound to office in choir, if they are in major orders,
 8     4,  99 |         not obliged to office in choir, especially priests who
 9     4,  99 |        divine office, whether in choir or in common, should fulfill
10     4,  99 |         that the office, both in choir and in common, be sung when
11     4,  101|       the divine office, even in choir, to nuns and to members


Perfectae caritatis
   Chap., Paragraph
12     0,  9  |       join the apostolic life to choir duty and monastic observances.