A Consuetudinary of St. Mary's, York, in which music appears only rarely. The hymn with voice exchange appears on f. 141 preceded by the text 'Ympnus Nunc sancte qui in omnibus festis principalibus cantatur secundum duplicem melodiam et incipitur a duobus in medio chori sic:' The incipit is as in Harley 4664, but a fifth lower.
This MS was a gift of Thomas Hutton, who presented it to the college on November 14th, 1638. The text of the Consuetudinary is edited by the Abbess of Stanbrook and J. B. L. Tolhurst in vols. 73, 75 and 84 of the Henry Bradshaw Society (1936-).