Coyne’s band, the Flaming Lips, released a video for its cover of “The First Time Ever I Saw Your Face” last week, which, in addition to featuring Badu’s lovely voice and face, showed her sister Nayrok naked, covered in glitter and two viscous substances, one red and the other white.

The video was taken down shortly after being posted, but it can still be viewed here.

Badu opened up her Twitter feed to conversation about the video earlier this week, and her followers responded by calling it “just plain weird,” “high art” and “pleasantly disturbing.”

Coyne then posted a series a tweets addressed to any of Badu’s fans who were angry about the video:

“To all the haters who think Erykah Badu has lost her mind!!! She has NOT!!! The Flaming Lips take full responsibility for the making of and the content of the controversial video !!! We are very sorry if it has offended some of Erykah Badu’s more Conservative audience! The video was intended for mature audiences and is NOT an Erykah Badu statement. It is a Flaming Lips video!!!”

Badu responded by saying the “tasteless, meaningless, shock motivated video” was released “unedited” and “unapproved.”

“As a human I am disgusted with your what appears to be desperation and poor execution. And disregard for others,” she continued. “As a director I am unimpressed. As a sociologist I understand your type. As your fellow artist I am uninspired. As a woman I feel violated and underestimated.”

Badu explained that, after she declined to take off her clothes for the video, she asked her sister to step in “out of respect” for Coyne’s concept.

Badu ended the note by saying Coyne could “kiss her glittery [behind,]” as well as Nayrok’s. Coyne responded with a picture of his lips covered in the crafting material.

This concludes the latest installment of Famous People Twitter Beefs.

* These tweets have been edited for language and clarity.