Watch the official trailer for John Farnham's documentary 'Finding The Voice'

A trailer for John Farnham’s new documentary has been released, telling the untold story of the Aussie music icon as never seen before.

This authorised documentary, directed by Poppy Stockell, will tell the story of John Farnham's career - from his life in the quiet suburbs of Melbourne to ‘60s pop fame, through incredible highs and lows, and ultimately to record-breaking success as ‘Australia’s Voice’. 

The trailer also features teasers of interviews from Farnham’s famous friends, including Richard Marx, Jimmy Barnes, Robbie Williams and the late Olivia Newton-John.

“Music is so important to us. It can heal you, it can go straight to somebody’s heart,” Newton-John said in a voice-over recorded before she died from cancer last August, aged 73.

Farnham’s long-time manager and good friend Glenn Wheatley also appears, with his interviews among the first filmed segments for the doco.

“I tried to get him a record deal and everybody passed,” said Wheatley, who was instrumental in Farnham’s comeback, famously mortgaging his family home to bankroll the singer’s Whispering Jack comeback album.

“John, you are the best singer in the country. The Voice. You don’t like to think of yourself as a legend, but you are.”

The documentary’s release also coincides with the 38th anniversary of Whispering Jack, Farnham’s 12th studio album released in 1986 that went on to become the highest-selling Australian album of all time.

John Farnham: Finding The Voice will be in cinemas from July 27th.