Complex sentence: Mérida Sussex, who worked in the St Kilda Public Library, joined on lead vocals, and their line-up was completed by Mark "BJ" Austin on Hammond organ and Tim O'Shannassy on drums.
Split into simpler sentences: Mérida Sussex, who worked in the St Kilda Public Library, joined on lead vocals. Their line-up was completed by Mark "BJ" Austin on Hammond organ and Tim O'Shannassy on drums.