Castle is doomy/gloomy heavy metal band with a charismatic female vocalist/bassist. Wicked stuff, I love it.
http://www.youtube.com/watch?v=gmXAMPJ5gtY
http://www.youtube.com/watch?v=k01YgHIOSw4&list=PLLtrICHGyxx_06Yfot4fi9zePxKplIjow&index=1
http://www.youtube.com/watch?v=2VA_2Aiq-eU&list=PLLtrICHGyxx_06Yfot4fi9zePxKplIjow&index=8