Tommy died one day after the 21st anniversary of his older brother's passing.
The soulful baritone was the voice behind hits such as "Before I Let Go," "Back in Stride" and "Can't Get Over You."
Moffatt produced 15 ARIA Hall of Fame inductees and was behind more tracks than another other single producer in APRA's list of the top 30 Australian songs.
The musician performed on Bowie's “Space Oddity" and Reed's “Walk on the Wild Side."
The Songwriters Hall of Fame member was also behind hits like "Up Where We Belong" and "Tears in Heaven."
He played piano with the throwback group from 1970 through 2022 and co-wrote the song “Sandy,” performed by John Travolta in ‘Grease.’
Darren revived his singing career in the late ’90s when he appeared on several episodes of Star Trek: Deep Space Nine as holographic lounge singer Vic Fontaine.
Bandmates said vocalist died following "sudden and tragic circumstances" on Friday (August 30).
"Last night, the world lost a radiant soul, a beacon of light on the stage and in life," the rapper's family wrote on social media.
The Zodiacs song topped the chart in 1960.
