The arias, duos, quartets, etc.
"The Great German Composers"
George T. Ferris
Though he as yet knew but little of counterpoint and composition, his creative talent already began to assert itself, and he produced several duos and trios, as well as solo compositions, which evinced great promise, though crude and faulty in the extreme.
"Great Violinists And Pianists"
George T. Ferris
56, 'Reliquit et de Analogia duos libros ...
"The Student's Companion to Latin Authors"
George Middleton Thomas R. Mills