Olivia Berka

Olivia Berka is a female American metal vocalist from Boston M.A. Her music career started in early 1996 as the lead vocalist and rhythm guitarist in the all female band Fortress. She later went on to vocals in the progressive rock band Counterparts around 1998-2000. Berka would later go on to record 2 albums with the progressive rock band Polaris, Seven arrows (2005) and The Human Illusion (2007) as well as an EP with progressive thrash/metal band Infinite descent (2009-present) She is featured on the Ætherius album "All I Need to Survive" under the name OKB