To First Vespers of Corpus Christi, in the rather gaudy chapel of Gloucester Hall within my parish. It was sung according to the Use of York; why, there appeared to be no explanation. Gloucester Hall was a house of studies for the subjects of some Benedictine abbeys before the Tudor Disorders, so the Benedictine rite might have been a more obvious choice. (After the Suppression it became a dependency of S John's; S John's was a very recusant college and Gloucester Hall seems to have been its even more recusant annexe.)
Vespers was very beautifully sung; but I don't think the young people can have known much Latin, because there was some strange phrasing. Perhaps, too, whoever transcribed the texts made slips; for example, in the third antiphon, they sang (each time) " ... in circuitu mensae Dominum", which can hardly make sense. The York use, apparently, had a responsory between the Capitulum and the Hymn; otherwise, there seemed no difference of text between it and the Tridentine Rite.