This group is very well known in Spain.
This is a folk pop rock group
It is a duo formed by a man and a woman
Their first CD is named as the singer last name
She is the singer and he plays the guitar
He always wears a bonnet on his head
They have recorded 5 CD and have sold 3 millions of copies.
Both of them are from Zaragoza
Have you guess who are they?
AMARAL of course :-)