Mohammed Fairouz, a prolific and inventive young composer, has written a new oratorio seeking to capture some of Jerusalem’s complex dynamics and sounds. Presented in conjunction with the Metropolitan Museum of Art’s fall exhibition “Jerusalem 1000-1400: Every People Under Heaven,” the work features the Metropolis Ensemble under Andrew Cyr. (Mr. Fairouz’s Machiavellian opera, “The New Prince,” has its premiere at Dutch National Opera in March.)