He is not sufficiently informed about western musical composition to give you any guidance on this subject; all he can tell you is that from the Master's instructions it seems there will be no use of any kind of musical instruments in the Bahá'í Temples. Chanting or singing will be the only sound (aside from reading) and what forms this will take must depend on the artists who create the music itself.
No doubt prayers and parts of the Tablets, "Hidden Words", etc., will be suitable, but he does not feel it would be advisable to abridge any given part, in other words to leave out parts of a paragraph or a meditation and foreshorten it in this manner. (From a letter dated 3 July 1949 written on behalf of Shoghi Effendi to an individual believer; The Compilation of Compilations, vol. III, Service in Baha’i Temples)
