In 1966, a certain go-go fever takes over Medellín. The name of the virus: LOS YETIS. The city, one of the most conservative in Colombia, started to feel the shakes in its foundations as thousands of teenagers danced to the new sound, willing to distance themselves from the tango and bolero favoured by their parents. To achieve this, what better than the go-go spirit embodied by a fury and abominable snowman? Los Yetis represent a very special case within the 60s rock scene in Colombia: teenage pop idols associated with Nadaism (a Colombian intellectual movement from the late 50s), they are the only commercially successful band based outside the capital city, Bogota, and have managed to remain in the musical mind of the nation. Their true entrance to the music industry comes in February 1966 through the record label Discos Fuentes, with the support of a promotion strategy unheard-of in Colombia until then. They would become the new idols of thousands of teenagers infected by the go-go craze that The Beatles had originated a few years earlier. Los Yetis combined covers of international hits with their own songs, which, even if a little tame, had a wild spirit and lyrics with attitude set to beat, surf and garage rhythms. The musical universe of Los Yetis had a lot to do with the dynamics of the music industry and the model it proposed for those couple of years in which Nueva Ola (the term is used in Latin America to refer to the mid-60s teenage scene) took over radio, TV and written media. However, it is evident when hearing their music that behind the concessions made to the commercial model lays a restless essence that barely manages to stay between the lines that the industry wanted to keep. Their encounter with Nadaism, call it historical or aesthetical, managed to link two vanguard movements in an organic way, and at the same time empowered a whole generation that looked for a sound of their own, different from that of their parents. LOS YETIS, definitely a band that wanted to take part in the changing times through their songs.