Werk is the solo project of Mariano Sandoval, a multifaceted artist from the province of Formosa. In 2004, he began his studies in Political Science at the University of Buenos Aires (UBA) and in parallel developed activities related to essays, poetry and music. In 2005, he was part of the experimental music quartet Azur with whom they carried out the Mainumby editions record label. Subsequently, he continued his career as a bass player in bands such as Minimalista País, Los Primos, Betty Confeti y su Conjunto Tropical and soloist Dale Mambo. Currently, he is based in his native province studying and working on the Paraguayan harp.