Music for S or ATB - the choir members who can sing the Holy Triduum at my parish are three strong men, TBarB, and one strong Soprano. And two who can be altos but will have trouble learning anything too complicated or singing a cappella on their own (my strong alto will be out of town). We've got the foot washing antiphons covered because we did those last year (Thanks, James) but am looking for suggestions for Holy Thursday a cappella Communion hymns that would suit this kind of choir. And a version of Ubi Caritas. I know we could just sing the chants but wondering if you know anything STB-like or with a very simple alto part....

On a related note, if we have done strictly no organ all through Lent (except a bit on Laetare), it would be appropriate to continue that for Holy Thursday, right? In the past we have sung Mozart's Ave Verum Corpus which would be easier for the altos because of the organ accompaniment, but I don't know if it makes sense to add organ suddenly on Holy Thursday. Thoughts?