Perth festival 2018: Siren Songs to sound through city in a program 'full of ritual'
Robert Lepage, Helen Garner and Inua Ellams lead lineup, but death of a pilot at centre of major work casts a shadow over announcementWomen's voices will descend from the sky and swell through Perth's business district at sunrise and sunset for 10 days in the large-scale sound installation Siren Songs, the cornerstone of 2018's Perth festival, which will take over the city in February.But the festival's program revea…