This is interesting! We have made it all the way around the liturgical year for Vespers organ accompaniments—which means all we have to do now is fill in the “holes,” such as Candlemas.
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.”