I haven't been able to develop any clear connection of the Ballestros family to Celtic culture, but clearly the family had to approve the piper for the cortege. My curiousity was peaked, due to this region's proximity to Galicia. According to Wikepedia, it appears that the name of the province where Seve lived, Cantabria, is of Celtic origin.

So a piper was totally appropriate to his send off.

May he rest in peace and his family find comfort in the outpouring of affection in Spain and the sports world.

P.S. Anyone know what tartan the piper was wearing?