Oh aye, I did listen to music, now and then, when the birdsong had died down to a twitter. The first piece was always Fac, Ut, Ardeat, cor Meum (Pergolesi, Stabat Mater) This is one of the most singularly playable, pieces of music which any pilgrim should take with them on the St James Way. It soothes the savage heart, it calms the uncalmed soul and surely cures blistered feet.
I played it daily. Those that heard it (inadvertently) commented on its serene beauty. A (Christian, religious) pilgrim walking alone in Cantabrian mountains needs little else.