Harvey was the musical director at Nine for 38 years and was given the nickname, the Maestro of Midday.
Nine CEO Hugh Marks paid tribute to the Harvey following his death.
"Geoff Harvey was a man of enormous talent as a musician and an entertainer," Mr Marks said in a statement.
"He was funny and generous, entertaining Australians as the Musical Director of choice on so many of our programs across the decades alongside the likes of Kerrie-Anne Kennerley, Don Lane, Ray Martin and Mike Walsh.
"Our condolences go out to his family and close friends at this sad time."
Harvey made his last TV appearance in January as a guest on Studio 10 opposite Kerri-Anne Kennerley.
“I just had the most privileged experience with him,” Kennerley told The Daily Telegraph.
“He was so funny and talented and so quick and dry-witted. I am just really, really sad.”