Word Study
duo
OXFORD DICTIONARY
duo, n. (pl. -os)
1 a pair of actors, entertainers, singers, etc. (a comedy duo).
2 Mus. a duet.
1 a pair of actors, entertainers, singers, etc. (a comedy duo).
2 Mus. a duet.
Etymology
It. f. L, = two
THESAURUS
duo
both, brace, couple, couplet, distich, double harness, doublet, duad, duet, duettino, dyad, ensemble music, ensemble singing, match, mates, octet, pair, part music, part singing, part song, polyphonic music, quartet, quintet, septet, septuor, sestet, set of two, sextet, span, team, terzet, terzetto, the two, trio, twain, two, twosome, yokeROGET THESAURUS
duo
Music
N music, concert, strain, tune, air, melody, aria, arietta, piece of music, work, number, opus, sonata, rondo, rondeau, pastorale, cavatina, roulade, fantasia, concerto, overture, symphony, variations, cadenza, cadence, fugue, canon, quodlibet, serenade, notturno, dithyramb, opera, operetta, oratorio, composition, movement, stave, passamezzo, toccata, Vorspiel, instrumental music, full score, minstrelsy, tweedledum and tweedledee, band, orchestra, concerted piece, potpourri, capriccio, vocal music, vocalism, chaunt, chant, psalm, psalmody, hymn, song, canticle, canzonet, cantata, bravura, lay, ballad, ditty, carol, pastoral, recitative, recitativo, solfeggio, Lydian measures, slow music, slow movement, adagio, minuet, siren strains, soft music, lullaby, dump, dirge, pibroch, martial music, march, dance music, waltz, solo, duet, duo, trio, quartet, quartett, septett, part song, descant, glee, madrigal, catch, round, chorus, chorale, antiphon, antiphony, accompaniment, second, bass, score, bourdon, drone, morceau, terzetto, composer, musician, musical, instrumental, vocal, choral, lyric, operatic, harmonious, Wagnerian, adagio, largo, larghetto, andante, andantino, alla capella, maestoso, moderato, allegro, allegretto, spiritoso, vivace, veloce, presto, prestissimo, con brio, capriccioso, scherzo, scherzando, legato, staccato, crescendo, diminuendo, rallentando, affettuoso, obbligato, pizzicato, desto, in notes by distance made more sweet, like the faint exquisite music of a dream, music arose with its voluptuous swell, music is the universal language of mankind, music's golden tongue, the speech of angels, will sing the savageness out of a bear, music hath charms to soothe the savage beast.For further exploring for "duo" in Webster Dictionary Online