Crucified Barbara is the modern hard rock answer to Girlschool. Mia Coldheart is one of the founding guitarists of the all-girl Swedish group and assumed vocal duties after the departure of their original vocalist. Her voice is akin to a cigarette-laced Pat Benetar and presents a lot of aggression and passion to the already high energy brand of rock the band prides themselves on.
Bolt Thrower is arguably the heaviest band in the world, in no small part to bassist and near-founding member Jo Bench. Perhaps the first woman to come on to the extreme metal scene, she has been laying down the thunder with the English death metal titans for 26 years.
Metalcore groups especially rely on strong vocal performances to keep their songs flowing at a steady pace, and when it's power you want, look to Straight Line Stitch's Alexis Brown.
Although Butcher Babies have just released their debut album 'Goliath' in 2013 via Century Media, the band has received lots of attention for the vocal double-team of Heidi Shepherd and Carla Harvey. The stunning duo are backed up by an all-male instrumental section, combining forces to be called "The Hottest Band in the World."