slechtvalk has been noted by some of the more renowned metal reviewers to have one of the greatest female vocalists in a metal band. they\'re good if you like some folk metal. i also know her, and she\'s quite nice. there is also royal anguish who is a little more gothic death metal. thorr\'s hammer is a little less well known, but still not bad. some of these bands might be a little less mild than bands like nightwish, since they include some more extreme metal elements. like they sometimes break into breakneck speeds with the drums, the growls from the male vocalists go extremely low or high, or just whatever. i\'m not sure totally if these bands do that, i forget. that stuff doesn\'t stand out to me because it\'s normal, but i think slechtvalk has a few songs where they play pretty fast and royal anguish growls a lot. they\'re still worth checking out. if you enjoy them i can recommend some good folk, death, black, or thrash metal bands you might be interested in. some less extreme than others.