Opera's showpiece song began as a simple "air"
An aria is a self-contained piece for one voice—usually inside opera, oratorio, or cantata—meant to pour out feeling while recitative pushes the plot. From late-seventeenth-century da capo forms to Gluck's reforms and Verdi's narratives, it stayed the singer's spotlight and the drama's emotional engine.
Italian aria, from Greek and Latin words for air, first marked a singing style in the fourteenth century; by the early sixteenth it meant simple strophic settings, and madrigale arioso named melody freed from thick polyphony. Onstage, structured song parted from speech-like recitative. Late Baroque Italy favored binary (A–B) or ternary da capo (A–B–A) arias, the middle section typically shifting key; Lully's French airs often used extended binary or rondeau shapes. Da capo arias with instrumental ritornelli—"little returns"—became eighteenth-century Europe's operatic trademark and, some argue, a step toward sonata form.
Alessandro Scarlatti locked the type into opera seria. Between about 1720 and 1760, M. F. Robinson notes, a standard major-key aria opened with orchestra, sung the first stanza to the dominant, returned via a second ritornello, then elaborated the same words back to the tonic. Librettist Carlo Goldoni recalled rigid casting: three principals got five arias each, seconds three, lesser roles one or two, with careful mixing of pathetic, bravura, and comic numbers. Types included aria parlante, aria di bravura, and aria buffa.
Christoph Willibald Gluck attacked fossilized showpiece singing, seeking equal words and music; Wagner later praised him in Opera and Drama (1850). Mozart absorbed the reforms; early-nineteenth-century Rossini and Donizetti still staged bravura hits, and the cabaletta paired cantabile calm with a fiery repeat—Bellini's "Casta diva" a famous scena. After about 1850 Verdi widened narrative arias such as Rigoletto's "Cortigiani, vil razza dannata!" (1851); Wagner's later music dramas and verismo thinned the detachable aria. Concert arias by Beethoven and Mozart, and even Bach's 1741 "Goldberg" title page calling its theme an ARIA, show how far the word traveled beyond the stage.
Whenever a character stops the world to feel out loud, the old air is still at work.
Source: Aria
