Absolutely correct, Keyhorn. The minister (in the Church of England) has the last word on all matters musical.
All the Anglican difficulties described in this thread can be solved by the minister. (And should be solved by the minister.)
Barry, can you clarify the position during an interregnum, please. My vicar is leaving and, although I'm not expecting any trouble, forewarned is forearmed! Who has final say over the music - is it the churchwardens or me? E.g. choice of hymns.
Not Barry, but in the absence of a 'minister in charge' most de jour decisions default to the Church Wardens, however, as there is provision in B20 for the Archdeacon to have an over riding decision as you as Director of Music are nominally in charge I would carefully liaise with whoever is taking each service in advance of each date, and if it causes any flack telephone the archdeacon. ( who should be supervising the appointment of a new member of Clergy anyway and understand the Pastoral implications of upsetting choir members who are not expert singers and need a weeks practice going through the hymns, and other music)