This is the legal frame of the Music Education in Catalonia.
Escola Superior de Música de Catalunya (ESMUC), in Barcelona.
"blog" of the students at ESMUC.
Conservatori Superior del Liceu, Barcelona.
Conservatori de Grau Professional de la Diputació de Tarragona.
If you live near Reus and want to learn an instrument of the traditional music, your option is "Aula de Sons". Here is where I received classes of gralla from Dani Carbonell. In the area of Tarragona, you can also attend the classes of the "departament de música tradicional", of the "Escola Municipal de Música de Tarragona" (no Web available) or in the AMTP: see link below.
"Aula de Música Tradicional i Popular" (AMTP), is a Web of schools of traditional music in Catalonia which belongs to the Generalitat, and with centers in Vila-Seca, Tortosa, Lleida, Figueres, and Barcelona.
Courses online of many music specialties.
Courses online on instruments: these are links to diferent Web pages; quality is uneven, but some are interesting.