John Hanley and Aimee O'Neil step in the studio for a chance to record the most important song of their life.

The Church Family performs a bluegrass classic for their grandfather, and Maddie Newton performs a tribute to the Sydney Children's Hospital.

Guy Sebastian performs a song written by a son who passed away before his mother could hear it. Plus, drag queen Kristian Zorino sings a classic for his boyfriend during their wedding.

Ex-cabaret singer Toni Lamond enter the studio to perform a touching song she never got the chance to record during her career. Plus, 15-year-old Sam Sargood performs a song dedicated to his family for supporting his musical ambitions.

Noel O'Brien performs a Rat Pack hit for his family to enjoy. Plus, Tony Smith and his sisters perform an homage to their father, and expectant parents Chloe and Torry sing a lullaby to their unborn child.

Katie Noonan assists 18-year-old Connor Sharpe record a song for the football coach who saved his life. Plus, a desert reggae band with a unique sound performs in the studio.