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. As a solo artist Blasko has released four studio albums, The Overture & the Underscore (11 October 2004), What the Sea Wants, the Sea Will Have (21 October 2006) – which peaked at No. 7 on the ARIA Albums Chart, As Day Follows Night (10 July 2009) – which reached No. 5, and I Awake (26 October 2012) – which made No. 9.

At the ARIA Music Awards of 2007, Blasko won Best Pop Release for her second album. Her third album won the Best Female Artist in 2009 and her fourth album was nominated for the same category in 2013. In October 2010 As Day Follows Night was listed at No. 19 in the book, 100 Best Australian Albums; the authors noted that it "turned on emotional subtlety and instrumental clarity. It sounded like little else in 2009, or most any other year".