This weekend, festival season kicks off for many in the UK, with thousands of people expected to attend Parklife in Manchester and Field Day in London.
Around the world, millions of people are preparing to go to similar open-air music events this summer such as Exit Festival in Serbia and Lollapalooza in Chicago.
But for some people, what should be a fun and sociable event can turn sour and there have been numerous reports of sexual violence and harassment.
For example, a rape and spate of sexual assaults reported at Bravalla, Sweden's biggest music festival, in 2016 and 2017 led to its cancellation until men could learn to "behave".
Reports of widespread sexual harassment and assaults at California-based Coachella in 2018 drew further attention to the issue.
In the UK, incidents have been reported at many major festivals including Latitude, Secret Garden Party, Reading, Creamfields and Glastonbury, although few have resulted in a conviction.
While crimes committed at festivals - including sexual violence - hit the headlines every year, there has been little research into the scale of the problem.