Sarah Blasko (born Sarah Elizabeth Blaskow, 23 September 1976) is an Australian singer-songwriter, musician and producer. From April 2002 Blasko developed her solo career after fronting Sydney-based band, Acquiesce, between the mid-1990s and 2001. She had performed under her then-married name, Sarah Semmens, and, after leaving Acquiesce, as Sorija in a briefly existing duo of that name.