After blasting mega-producer Simon Cowell on national television, Shannon Noll has opened up about another nasty run-in he's had in the past, this time with Aussie music icon, Ian "Molly" Meldrum.

As reports, Noll's story will feature on tonight's episode of I'm A Celebrity.. Get Me Out Of Here! which he alleges occurred at the 2004 Logies following the first season of Australian Idol where he finished runner-up behind Guy Sebastian. 

The Orange-born singer claims he walked into an argument between Meldrum and Australian Idol judge, Mark Holden late in the evening.

"There’s only two people left and they are GOING each other: ‘You bloody don’t know what you’re talking about!’ It was Molly Meldrum and Mark Holden," Noll said.

"I walked past and Mark goes, ‘Well he’s here now, why don’t you tell it to his face?'.

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"I thought, oh shit, what have I walked in on? [Molly] goes, ‘Oh, g’day Shannon. Well, look mate, you can’t sing. You’re not a great singer at all, and you’ll never make it in America.’

"Molly said that to my face."

Noll continued, "I said, ‘You know what Molly? Opinions are like arseholes, everyone’s got one.’

"Molly Meldrum, who I’ve looked up to me whole life, who’s been such an advocate for Australian music, told me I’m shit," Noll laughed.

Tonight's full episode airs on Channel Ten from 7.30pm.

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