More Bachtracking, as it were; this time in Cardiff with the BBCNOW:
"William Walton’s brief had been to compose a small choral work; it grew and grew by 1931 into Belshazzar's Feast, a piece about which nothing is small. Walton had nearly given up in the middle, but pressed on as the piece changed out of all recognition. Thomas Beecham, such a supporter of Delius, had quipped to the younger Walton: “as you’ll never hear the thing again, my boy, why not throw in a couple of brass bands?” Brass players have appreciated the extra work ever since."
Read the rest over at Bachtrack.