What makes El jardín de los presentes by Invisible notable?

The album is noted for its critical acclaim, often cited as one of the essential works of Latin American rock. It helped popularize progressive rock in Argentina and influenced numerous artists in the genre, while also reflecting the socio-political climate of the time with its lyrical content. Released in 1976, "El jardín de los presentes" was Invisible's third album, arriving during a peak period for the band. Following their previous release, "Los libros de la buena memoria," this album solidified their reputation as pioneers of Argentine progressive rock amidst a politically turbulent landscape.