Joel Madden gave Perth's Adam Garrett some sage advice on how to approach his Battle Round on The Voice.
Garrett competed on last night's episode against Nick Stenmark, with the pair singing an acoustic rendition of Swedish House Mafia's Don't You Worry Child.
"Joel told me to just try and make some connection with the song," Garrett told AAA.
"He spoke to me about how he makes a connection with songs and said he thinks about his dad. He has had some trouble with his dad in the past and I have felt that I have been a bit of a disappointment to my dad in the past, so I sang it for my dad.
"Obviously, Don't You Worry Child is a really emotional song in that regard and there are times in the past when I wanted to be more close to my dad than I was."
Madden's advice paid off, with Garrett being chosen over Stenmark to go through to the Showdowns stage of the smash-hit Nine singing competition, and his dad couldn't be prouder.
"We are really good mates now and he is as proud as punch, and that is all I have ever wanted. He is behind me 100 per cent," Garrett said.
The former postman said he had been overwhelmed by the public's reaction since he appeared on the show in his blind audition last week.
"I was told to prepare for a bit of an onslaught but it was more than I expected," he said.
And his success might be to blame for any slight delays coming out of Australia Post's Joondalup hub last week.
"They all stopped work when I was on the Today show, which was nice. They sent me pictures of the whole Joondalup delivery centre shutting down for the three minutes while I was on air," he said.
"It is nice to know they are behind me."