 Complete the following phrase:  Miller-Heidke sang the screen-role of Amber in the world premiere of Michel van der Aas opera Sunken Garden for the ENO in April 2013. In September the singer-songwriter left Sony Records, which she described as a corporate juggernaut. She started work on her fourth Australian studio album, O Vertigo! 14 March 2014, and sought crowd-funding via PledgeMusic to record it independently, as well as donations for the protection of the Great Barrier Reef. She broke the record on Pledge for the fastest target achievement: in three days the album was paid for and donations for the reef continued. O Vertigo! was produced by John Castle for UK-based label Cooking Vinyl and reached No. 4 on the ARIA Albums Chart. It was also nominated for the ARIA Award for Best Adult Contemporary Album in 