Complex sentence: Penelope was born in Durban, KwaZulu-Natal formed the group Gymslip, along with her brother prior to joining the all-girl group called Pantha as front singer when it was formed in 1979.
Split into simpler sentences: Penelope was born in Durban, KwaZulu-Natal. She then formed the group Gymslip, along with her brother prior to joining the all-girl group called Pantha as front singer when it was formed in 1979.