My first response to the BBC Proms' kind invitation to perform at a venue so prestigious that my family had heard of it (as opposed to, say, a room above a pub in Farringdon), and to have the results broadcast on Radio 3, was barely-trammelled delight. My second was blind social and sartorial panic.
Every summer I sit amazed and delighted at the BBC Proms audience who so enthusiastically, and yet often politely, applaud between movements while I so often sneakily snigger at the woman, a being of the utmost conventional practice, sitting in front who would always shake her hear in utter disapproval at the vulgarity of such a concept.
Macmillan seems to offer a Credo for the modern age; a statement of religious belief with the purity of faith that attended his ancestors, but with a host of other influences, difficulties and interruptions. It's also a Credo which seems doubt. The final fanfare could suggest a definite finish, but equally a continuing wrestling with faith and identity.