In 2015, 50 years of the birth of Rock in Castilian were celebrated, taking as reference the output of "La Respuesta" (1st single from the musical group of Rosario, Los Gatos Salvajes). Starting from this fact and answering the question of if there is a musical DNA of Rosario that crosses the 50 years of music, a group of local musicians (with the Zorzi in the head) gave form to a cycle of recitales / homenajes: ROSARIO: 50 YEARS OF ROCK IN CASTELLANO Homage of musicians from Rosario to the cultural identity of a city that changed the history of Ibero-American music.

On Saturday 20 and Sunday 21 February in the Municipal Amphitheater was held "Rosario: 50 years of Rock in Castellano". A unique show that for 2 consecutive nights featured on stage with more than 130 artists from Rosario and the region playing live (and exclusively) songs by authors of the city of the last 5 decades.
The recitals were held under the Rosario cycle under the stars organized by the Secretary of Culture and Education of the Municipality of Rosario and there were also a fair of discs of the participating artists and their respective labels.

From the recitals participated musicians and bands of great trajectory and recognition among which it is worth to emphasize the meeting (especially thought for this opportunity) of the legendary band of Cañada de Gómez, PUNTO G that was carried out Saturday 20.
Both nights he reviewed the musical history of Rosario, playing songs from Los Gatos, Fito Paez, Abonizio, Fandermole, Cielo Razzo, Shocklenders, Mortadela Rancia, Degradé, Sinapsis and many other historical and current authors.
In this opportunity Martín Delgado interpreted next to Hernán Flores and Evelina Sanzo a version of the classic of Fito Paez, Giros.