Complex sentence: Aggi left to be replaced by Karen Parker, later joined by second vocalist Alex Taylor, but after some live performances Parker, Peutherer, and Crawford departed, replaced by Sarah Kneale (bass), Laura MacPhail (drums) and Ann Donald (drums).
Split into simpler sentences: Aggi left to be replaced by Karen Parker, and later joined by second vocalist Alex Taylor. After some live performances, Parker, Peutherer, and Crawford departed and were replaced by Sarah Kneale (bass), Laura MacPhail (drums) and Ann Donald (drums).