The choirs (coros) are larger groups that travel through the streets on open flat-bed carts or wagons, singing, with a small ensemble of guitars and lutes. Their characteristic composition is the "Carnival Tango", and they alternate between comical and serious repertory, with special emphasis on lyrical homages to the city and its people. The costumes are, by far, the most sophisticated and elaborate of all.
Other groups can be found in the streets: the quartets (cuartetos), that, oddly, can be composed of five, four, or three members. They do not bring a guitar, only a kazoo and two sticks, that they use to mark the rhythm. They use set-piece theater scenes (pre-written skits), improvisations, and music, and they are purely comical.
The minimalist carnival groups in Cádiz are the romanceros, perhaps the oldest, and, certainly, the most invariant carnival representation in Cádiz throughout history. A romancero is a single costumed person who brings a big easel on which posters help him to tell a story with images. The romancero recites humorous verses while pointing at aspects of the pictures and drawings with a long stick.
The best known contest among chirigotas, choirs, comparsas, and quartets in Cádiz is the 'Official Contest' at the Gran Teatro Falla, that finishes just before the first Saturday of Carnival. It is broadcast by the regional television and radio stations. Other contests take place before, during, and after the Carnival, usually organized by institutions and private clubs, and their venues are open tablaos in the public squares (plazas) of the city.