Emily Eavis has described the moment she told her lineup manager for this year's Glastonbury to go back to the drawing board and 'replace some blokes with women'.
During a candid speech, the inspiring feminist spoke out about the male-dominated culture at the world-famous festival; which she described as "impenetrable".
The "old guard" men in charge of building the festival and booking its stages made Emily feel like she had been labelled a "real hassle".
But despite this hostile atmosphere, she is determined to promote female artists, book female headliners and introduce more women into the team.
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Speaking at an event organised by BBC Radio 1 host Annie Mac, she said: "Some of them are just a bit old guard.
"It's a lot of old guys running things, the old bookers."
She added: "They love a beer with the guys, the agents.
"They do golf days, they do football trips, and there's a whole brotherhood which is so tight.
"It's impenetrable.
"It feels like it.
"I'm like, 'come on'.
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"I know they are labelling me as a real hassle, and it's such a hassle. 'Will you just shut up' and 'it wasn't like this when your dad was in charge'.
"It's so annoying.
"But if you want to make progress you just have to do it, and you have to be up for being a bit of an annoyance.
'We are nowhere near where we need to be'
Emily continued: "Unfortunately, you have to make a massive jump the other way to make the tiniest bit of progress.
"That means me being really pushy with these people.
"It's the tiniest bit of progress.
"We are nowhere near where we need to be.
"We're making slow progress but there's a long way to go."
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Eavis is an ambassador for Keychange, a talent development initiative which aims to empower women to transform the future of the music industry.
She has been striving for a 50/50 gender balance across Glastonbury's lineup but in January admitted they were "a little way off".
Eavis added: "The thing about the men who book (our) stages, (is) quite a lot of them are old men.
"They don't understand why I am pushing them the whole time.
"When one of them presented a lineup this year, they were like, 'right, I'm done, this is it'. I was just like, 'I'm really sorry but you're just going to have to take some of those blokes off. Where are the women?'
"There were no girls, where are the women?
"Come on, for God's sake."
Record label bosses, promoters and journalists also spoke at the Annie Mac Presents London Conference Day at the Moth Club in Hackney, east London.
