The da capo aria () is a musical form for arias that was prevalent in the Baroque era. It is sung by a soloist with the accompaniment of instruments, often a small orchestra. The da capo aria is very common in the musical genres of opera and oratorio. According to Randel, a number of Baroque composers (he lists A. Scarlatti, Hasse, Handel, Porpora, Leo, and Vinci) composed more than a thousand da capo arias during their careers.
Form
A da capo aria is in ternary form, meaning it is composed of three sections. The first section is a complete song with accompaniment, ending in the tonic key, and could in principle be sung by itself. The second section contrasts with the first in its musical key, texture, mood,