Enjoyed the post indeed, I aw FNAC and I was like oh cool that must be in Spain, did not know it was in Madrid. Madrid is great btw but I prefer Granada.
Mago de OZ, is one of the first more rock oriented bands I got to know living in Spain, but I wouldn´t call the Celtic.
I do love medieval and Celtic music and if you enjoyed it you might want to listen OMNIA one day: