Israel Tanenbaum, have collaborated with Colombians in salsa projects. Recently Colombian dancers have become World Champions year after year and the style is becoming more popular and admired among Salsa professionals worldwide; with two of the most prominent salsa schools being Swing Latino driven by the dance choreographer Eduardo 'El Mulato' Hernandez, and Constelación Latina driven by one of the world's most beloved dancers Jhoanna 'KKO' Agudelo. As a dance, Colombian Salsa is unique and different from New York/Puerto Rico and Cuban salsa. Colombian Salsa concentrates on footwork and does not incorporate cross-body leads. Dancers leave the upper part of the body still and relaxed while the feet do extremely fast and complex movements. Colombian rock music In the late 1950s, Mexican rock artists like Enrique Guzmán and César Costa became very popular in Colombia. Soon, native rock bands like Los Speakers and The Flippers gained a wide following. Starting in 1967 (see 1967 in music), native bands like Génesis (unrelated to the more famous band Genesis of a similar name) fused native musical forms (like cumbia) with rock. Marco, the voice of the Rock and Roll, was a pioneer and promoter of the "Rockabilly Colombian" performed with his unmistakable personal stamp in their own language. Virtuality is in their first recordings routed to the sensitive listener to enjoy the simplicity of rock bass, guitar and drums, combined into a whole to produce a very particular and in an atmosphere of a home recording studio, filled with reel tapes and three microphones mixed in mono line. (Marco Tulio Sanchez B) contributed to the Colombian rock and roll look to the past to remember our roots, dabbling in country and rockabilly music evokes Elvis Presley, is called today the "Elvis colombiano", awarded abroad for their ability on stage as a whole "Showman" and the unmistakable voice of Cronn rocker. Rock in Colombia gained great popularity during the 1980s with the arrival of bands such as Soda Stereo (Argentina), Los Prisioneros (Chile), and Hombres G (Spain). During the 90's, many punk and heavy metal bands appeared in Bogotá, Medellín, and Cali. Colombia has possibly the biggest underground, hardcore, metal and punk movement of the continent, and is known in Latin America as the "punk corner". Kraken and Masacre are some of the most important Colombian rock bands. The music event Rock al Parque celebrated yearly in Bogotá is the largest free rock