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A lot has changed in the year since doll-haired Australian chanteuse Sia Furler postponed the tour behind her latest release, We Are Born, due to her struggle with Graves’ disease. For one, she got healthier and more confident behind a flood of support at home and abroad. She also landed a gig working with collaborator Christina Aguilera as the pop star judged divas-in-training on American Idol clone The Voice. Despite her flirtations with the karaoke set, Sia’s evocative jazz-pop and strange-girl-next-door schtick—think a more eccentric Robyn ditching electro-pop for ornate, Kate Bush-derived freak-folk—has collaborated with artists ranging from Jamiroquai to Beck to Zero 7. Nevertheless, with a voice that makes for some seriously odd and cathartic moments, Sia seems most comfortable in the technicolor world of her own making. Sia performs with Oh Land and Ximena Sariñana at 7 p.m. at the 9:30 Club, 815 V St. NW. $25 (sold out). 930.com.