S A YOUNG MAN, Justice Clarence Thomas studied at two Catholic seminaries: Saint John Vianney (Savannah) and Immaculate Conception (Missouri):
Without question, he would have sung Gregorian chant while at Conception.
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.”