Calum Mew has 4 Gretta Ray concerts.

Gretta Ray (born May 22, 1998) is an Australian singer-songwriter. In 2016, she was the winner of the national Triple J Unearthed radio competition for bands and songwriters, and the 2016 Vanda & Young Global Songwriting Competition, with her song "Drive". She grew up in Melbourne, Victoria, Australia, attending Princes Hill Secondary College. She sang in choirs from the age of five, latterly singing and touring with Young Voices of Melbourne, and as the youngest member of If You See Her...