Complex sentence: Sebastian Hardie were later joined by Mario Millo on vocals and lead guitar and Toivo Pilt on keyboards, by 1974 they had become Australia's first symphonic rock band and released "Four Moments" in August 1975, which was produced by English.
Split into simpler sentences: Sebastian Hardie were later joined by Mario Millo on vocals and lead guitar and Toivo Pilt on keyboards. By 1974 they had become Australia's first symphonic rock band and released "Four Moments" in August 1975, which was produced by English.