Thanks to member Roehre for taking the trouble to look that up. It is in fact a little strange that the B.B.C. announcer did not supply an English translation of the title; perhaps in those days it was assumed that listeners to the Third Programme would be fluent in Italian.
Here is a paragraph from Reginald Smith-Brindle concerning this work:
He calls having the "choral melody" on the top line "an old concept"; old it may be but I hope he does not mean to imply that therefore it has been entirely superseded. And all those septuplets seem a bit over the top don't they.