Galicia, a gorgeous part of northern Spain (and one of the best places in the world to go if you really like seafood), is a bit different from the majority of Spain in terms of them having their own language and being heavily influenced by celts. It really is the only part of Spain where I have seen them include bagpipes as a part of traditional folk music.
Anyways, here is a bit of Galician celtic-influenced music :
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