In the 20th century, flamenco danced informally at gitano (Roma) celebrations in Spain was considered the most "authentic" form of flamenco. There was less virtuoso technique in gitano flamenco, but the music and steps are fundamentally the same. The arms are noticeably different from classical flamenco, curving around the head and body rather than extending, often with a bent elbow. thumb|upright|left|Flamenco, Córdoba "Flamenco puro" otherwise known as "flamenco por derecho" is considered the form of performance flamenco closest to its gitano influences. In this style, the dance is often performed solo, and is based on signals and calls of structural improvisation rather than choreographed. In the improvisational style, castanets are not often used.
in the 20th century flamenco danced informally at gitano (roma) celebrations in spain was considered the most "authentic" form of flamenco there was less virtuoso technique in gitano flamenco but the music and steps are fundamentally the same the arms are noticeably different from classical flamenco curving around the head and body rather than extending often with a bent elbow thumb|upright|left|flamenco córdoba "flamenco puro" otherwise known as "flamenco por derecho" is considered the form of performance flamenco closest to its gitano influences in this style the dance is often performed solo and is based on signals and calls of structural improvisation rather than choreographed in the improvisational style castanets are not often used