The Spirit of Éire: Celtic Music in Spain

We already know that 'Celtic Music' is a wide concept, so much so that there are many different theories about if we can define all this kind of music as celtic. There are some authors as Geoff Wallis and Sue Wilson in 'The Rough guide to Irish Music' who think that the differences between celtic music from Scotland and Ireland and the music produced in the rest of Europe or US has almost nothing to do one with each other. Alan Stivell takes into account older researches and he thinks that the base or origin is the same with variants.
Here in Spain, the regions of Galicia, Cantabria and Asturias were in the past celtic areas, to such a degree that the only intact celtic town remaining of all Europe is Castro (Galicia). But particularly in music, Spanish Celtic music does not shows the same patterns as the Irish one, yet, they share origins.
Although unfortunately it hasn't got a higher level of importance within the music in Spain, there are several festivals of celtic music such as:

'Festival Internacional del Mundo Celta de Ortigueira' in Ortigueira (La Coruña).
'Festival Intercéltico de Avilés' in Avilés.
'Folixa na Primavera' in Mieres.
'Folkomillas Festival' in Comillas.
'Festival Internacional de Música Celta de Collado Villalba' in Collado Villalba.
'Sauga Folk' in Colindres.
'Festival Intercéltico de Orejo' in Marina de Cudeyo.
'Festa da Carballeira' in Zas (La Coruña).

Something interesting is that in most of the cases, the bands of celtic music sing in gallego:

Luar na Lubre, Milladoiro, Os Cempés, Carlos Núñez, Berrogüetto, Susana Seivane, Cristina Pato, Xosé Manuel Budiño, Mercedes Peón, Anxo Lorenzo (fusion of celtic and electronic music).

From Asturias:

José Ángel Hevia (precursor of the electronic bag-pipe), Tejedor, Felpeyu, Llan de Cubel, Corquiéu.

In some other regions:

Luétiga, Garma, Gatu Malu, Cahórnega, Naheba, Atlántica, Cambera'l Cierzu, Antubel, Gandalf, Tsuniegu, Olwen, Medulia, L'Arcu la vieya, O'Carolan, Hibai Deiedra, Kepa Junkera, Zamburiel.

More recently, groups like Triquel, Celtas Cortos, Aquelarre AgroCelta, Ñu, El Sueño de Morfeo (more pop), Lándevir or Saurom, experiment with the fusion of the celtic with variations of pop, rock, heavy metal, etc. But the most famous one is Mago de Öz (rock heavy and celtic sounds).

Here you can listen to the songs of some of the groups/singers before mentioned that are the ones that I like most: Hevia, Celtas Cortos, El Sueño de Morfeo (before called Xemá) and Mago de Öz.