But the event that finished defining the style was the appearance of the band Los del Bohio who adopted the guitar as the main instrument, leaving aside the traditional accordion.
[1] These first bands of cumbia santafesina were characterized by their amateurism and by the difficulties they faced in obtaining funds that would allow them to record their material.
It is at this time that the figure of Martín "Chani" Robustiano Gutiérrez was key, who raised funds so that these recordings could be made.
Osvaldo "El Abuelo" Raggio leaves Los Palmeras to form Grupo Alegría,[3] with a faster cumbia style that emphasized the accordion and the timbaleta.
In 1993, he took the position of vocalist for Grupo Trinidad Leo Mattioli, who would later develop an important solo career until his death in 2011.