Born in Badalona, Soler studied philosophy and literature at the University of Barcelona, where he earned his teaching license in 1975. He worked for the city of Badalona as an education technician before serving on its municipal council from 1979 to 1983 as a member of the Unified Socialist Party of Catalonia.
Soler's work centered around research on popular culture, exhibited in his many works on modern culture in Catalonia. He also directed "Tradicionari", an encyclopedia of popular culture in Catalonia published in ten volumes by the Gran Enciclopèdia Catalana. Devoted to childhood education, he worked as a screenwriter for the cartoon Història de Catalunya, broadcast on Televisió de Catalunya from 1988 to 1989.
In 1979, Soler was awarded the Crítica Serra d'Or Award [ca] for Festes tradicionals de Catalunya and the Premi Baldiri Reixach in 1982 for Barres i onades: relats d'història de Badalona. In 2006, he was awarded the Premi Nacional de Cultura Popular [ca], given by the Generalitat de Catalunya, for his work on the development of "Tradicionari" throughout his career. He received the Creu de Sant Jordi in 2018.[3]
Soler i Amigó died on 1 January 2022, at the age of 80.[4]