Opera buffa, or “comic opera", is a genre of opera. It was first used as an informal description of Italian comic operas. Especially associated with developments in Naples in the first half of the 18th century, whence its popularity spread to Rome and northern Italy, buffa was at first characterized by everyday settings, local dialects, and simple vocal writing (the basso buffo is the associated voice type), the main requirement being clear diction and facility with patter.