San Simón Fiddle is a one-week summer course for string instruments in traditional music, organized by Galicia Fiddle since 2012. It takes place in San Simon Island, in Pontevedra (Galicia, Spain). It’s designed for children and youngsters between seven and eighteen years old, with violin and cello formation. The course purpose is to promote the use of strings in traditional music and to encourage students to have fun while learning and improvise, regardless of their technical level. Exploring the participants’ capacity to improvise to the maximum is one of the main goals pursued, which will make them discover a new and fantastic musical world unknown to them until then. At this summer course the music is transmitted orally, dispensing music scores in order to sharpen the participants’s capacity for musical retention, who, in a few days on the island, will be able to learn a melody in just a few minutes.