For many female musicians in the Charleston scene, music is not a means to an end — it’s a way of life.And local female musicians make a point to encourage and support their fellow women in the craft, which is why the ladies (and musicians) behind Ohm Radio 96.3 are partnering with Feminist Magic Market and Commonhouse Aleworks in Park Circle to present an all-female musician showcase that takes place from noon to 3 p.m. on Sept. 23.