How to Stay Prayerful as a Church Musician
It all boils down to recollection. This 39-page book will help. (And so will one weird trick with your computer, as the clickbaiters would say.)
Pope Saint Paul VI (3 April 1969): “Although the text of the Roman Gradual—at least that which concerns the singing—has not been changed, the Entrance antiphons and Communions antiphons have been revised for Masses without singing.”