I am new to discovering Welsh music, but her cd's are some of my favorites. I hope that Sain might issue a commemorative cd.
Folk music - really all music - must be open to new talent as it comes along and welcome the changes that it produced.
Siwsann seemed to respect the past, but also to have a spirit of newness that added much to the music. I particularly liked her version of Myfanwy - the singer was mad at being jilted, which is what the words say, not the syrup version that is usually sung.
God bless your soul, Siwsann.
Chris in Chicago