Similar to its South American cousin, Tango Gitano consists of a simple, easily varied harmonic and melodic structure over a four-count rhythm. Unlike other four-count patterns, the first beat is weak while the other three beats are strong. As Tangos became a part of flamenco in the 19th century, certain aspects of older flamenco forms were folded into it, including 12-count soleares letras re-shaped to fit the four count rhythmic pattern. Tangos of Granada shows traces of Moorish Zambras, while the Tango de Cádiz, Tanguillos, is a compound rhythm of triplets and duplets.