I have heard hundreds of masses with orchestral and organ accompaniments in Roman churches, and can confidently assert that nine-tenths of them were by old and comparatively obscure composers, such as Morales, Carpentrasso, Ruffo, Festa, Pierre de la Rue, Vittoria and Anerio, the remaining tenth being chiefly by ancient and distinguished writers; for example, Palestrina, Carissimi and Allegri. I do not remember hearing anything, belonging to this class of work, more modern than Jomelli and Paisiello. But, in the matter of voluntaries, almost unbounded license was allowed to the organist, who might and did, as his fancy happened to prompt him in that direction, introduce airs from nineteenth-century operas, and even popular melodies, into his reminiscences or arrangements of sacred strains.