UPDATE: Grimes responded.

YouTube star turned major label pop star turned Mad Decent-signed pop star Poppy recently released a new album, Am I A Girl?, that included a collaboration with Grimes - the part bubblebum, part metal "Play Destroy." Poppy spoke to Billboard about the album, and about working with Grimes, which she said was an experience she "could have gone without."

From Billboard:

"I was kind of bullied into submission by [Grimes] and her team of self-proclaimed feminists," she says. "We planned the song coming out months ago, and she was preventing it. I got to watch her bully songwriters into signing NDA[s] and not taking credit for songs that they were a part of. She doesn't practice what she preaches. It's really upsetting to work with a female that is very outward about a topic, but behind closed doors, it's the complete opposite. It's actually very disheartening to people that are actually feminists and supporters of other females."