Beyonce Producer Disses Kelly Rowland

Jeff Bhasker, who produced tracks for Beyonce, has laid into her Destiny's Child mate.

Bey's producer described Kelly Rowland's new song with Lil Wayne as "weak" and "horrid" during a rant on Twitter.

"How can this kr song with the weakest beat and melody of all time be the #1 song on urban!?" Jeff posted.

"Oh yeah. Wayne."

The new X Factor judge's track 'Motivation' hit the top spot on the Billboard Hip Hop and R&B charts in the US earlier this year.

But Jeff, who helped make Beyonce's album '4', continued to lay into Kelly's hit.

"I just listened to Motivation again to see if I was too harsh in my critique," he added.

"I wasn't. The lyrics are horrid as well."