Our children must at the very least be exposed to the great music of the Church.
Traditional hymnody is often easier to sing: simpler melodically and rhythmically, and generally more substantive in theology.
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.”