National tour … How Angus and Julia Stone will launch their third record. Picture: Stephen Cooper Source: News Corp Australia IT was Kasey Chambers who helped Angus and Julia Stone figure out how to run a family music business. Kasey Chambers had engaged the young siblings, who had only just decided to form a band together, to open on her Carnival tour in 2006. Angus Stone remembers the Sydney Opera House show, a venue they will headline themselves in September, [...]