This is what we found on Wikipedia regarding the Kate Miller-Heidke:

Kate Melina Miller-Heidke ( HYDE-kee; born 16 November 1981) is an Australian singer and songwriter. Although classically trained, she has generally followed a career in alternative pop music. She signed to Sony Australia, Epic in the US and RCA in the UK, but since 2014 has been an independent artist. Four of her solo studio albums have peaked in the top 10 of the ARIA Albums Chart, Curiouser (October 2008), Nightflight (April 2012), O Vertigo! (March 2014) and Child in Reverse (October 2020). Her most popular single, "The Last Day on Earth" (July 2009), reached No. 3 on the ARIA Singles Chart after being used in promos for TV soap, Neighbours, earlier in that year. At the ARIA Music Awards Miller-Heidke has been nominated 17 times.

She represented Australia in the Eurovision Song Contest 2019 in Tel Aviv, Israel, with her song, "Zero Gravity" (January 2019). Miller-Heidke is the only person to have sung at Coachella, the New York Metropolitan Opera, and Eurovision. She has won five Helpmann Awards.