In 1934, Dom Gregory Murray's anti-proportionalist A Pilgrim's Progress was published. In the same year, a series of articles on the subject of the rhythmic quantities of Gregorian musical signs began to be published, entitled 'La Question Rhythmique Grégorienne' by the Abbé G Delorme. This work concluded that certain notational styles contained two distinct signs for any single note and that this difference must be related to rhythm rather than pitch.
In 1934, Dom Gregory Murr.ay's anti-proportionalist A Pilgrim's Progress was published In the same year, a series of articles on the subject of the rhythmic quantities of Gregorian musical signs began to be published, entitled 'La Question Rhythmique Grégorienne' by the Abbé G Delorme This work concluded that certain notational styles contained two distinct signs for any .single note and that this difference must be related to rhythm rather than pitch.