Lawyers representing masked metal purveyors Slipknot [ tickets ] have sent a cease-and-desist letter to Burger King, alleging that the fast-food chain's new television ad campaign infringes on the band's trademark look.

In the ads, a masked band dubbed Coq Roq sings head-banging odes to BK's new chicken strips.

The cease-and-desist letter, posted at The Smoking Gun website, reads, "It is obvious that the television advertising and Website are designed to conjure up the image and persona of a live performance of Slipknot [ tickets ]," adding that, the Coq Roq characters in the ad sport masks that include "a gas mask as worn by Slipknot's Sid Wilson, a kabuki-style mask as worn by Slipknot's Joey Jordison, and a mask with dreads as worn by Slipknot's Cory Taylor."

Burger King, in turn, filed a federal suit this month against Slipknot, asking a U.S. District Court to clear the campaign.

John Legend [ tickets ] has issued a duet remix of his song "So High" that features vocals by Lauryn Hill [ tickets ]. It marks Hill's first recorded appearance since 2002's MTV Unplugged 2.0.

"I'm really excited to have Ms. Hill on the track," Legend said in a press release. "She's truly a genius. The first time I ever appeared on a major album was when I played piano on 'Everything is Everything' from 'The Miseducation of Lauryn Hill.' I have been wanting to work with her again ever since. It's great to see that wish finally come true."

The song was sent to radio over the weekend.

Floetry [ tickets ]'s third album, "Flo'Ology," is set to hit stores Nov. 8, according to Geffen Records. The album's first single, "SupaStar," features Common.