Nick Cannon insists he "will never say anything negative" about ex-wife Mariah Carey amid rumours he blasted her in a new track.

The comedian/TV host released the song Oh Well, about an ex, on his SoundCloud.com page and sparked speculation he was taking aim at Mariah, the mother of his four-year-old twins Moroccan and Monroe.

Lines from the song include, "She didn't like when I was broke, but she missed the old me. Wait, girl – you got me confused" and "Baby girl, don't cry. I won't lie. Our relationship was a lie, but baby some die. I guess we parted, that's all. Oh well" plus more obvious allegations of cheating.

Nick took to Twitter to insist he would never criticise Mariah publicly because they have a good relationship following their split in 2014 after six years of marriage.

"Sorry to disappoint the bottom feeders but you won't be hearing any diss records from me unless it's about the GOVERNMENT!" he writes in a series of tweets. "How many times do I have to reiterate @MariahCarey and I are super cool! Stop trying to create negativity, we will never subscribe to it...

"We are both VERY happy and have both moved on, so all the outlets reaching for gossip, it's not 2014 anymore... Like I have always said I will forever Respect and Love @MariahCarey and will never say anything negative about the mother of my children."

He also states that he would not release a diss track because he would rather "just come out say it" if he had a issue with someone.

Mariah has moved on with Australian business tycoon James Packer, and the couple got engaged in January (16) after a whirlwind romance. Nick told talk host Ellen DeGeneres in December (15) he was single and celibate.