Their last and most famous album was The Speakers en el maravilloso mundo de Ingeson edited in 1968.
Bogotá, Medellín and Cali were the cities where this movement started to grow, and they remain today as the main cradles for new groups and styles.
The society of the region, more familiar with one of the main folk musics of Colombia, bambuco, received it with mixed opinions until it became established as part of youth culture.
[2] This musical movement was almost unrecognized in other parts of the country, due to the ongoing boom in literature which marked a "new age" in Colombian culture for the next half century.
The rock scene is beginning to grow as an important part of the Latin American and world music industry.