The cover took place at the city’s third annual GIRLSCHOOL Festival, which aims to benefit the Los Angeles Girls Rock Camp supporting women-fronted-bands and artists.
Manson and Apple were performing at the Bootleg Theater when they launched into the Gore track.
Apple’s t-shirt featured the slogan ‘Kneel Portnow’, referencing the Grammy president Neil Portnow, who recently claimed that women need to “step up” after the 2018 ceremony was criticised for its gender disparity.
Lorde was the only female artist nominated for Album of the Year at the ceremony, and the only artist in the category not to be offered a solo performance.
Last week it was announced that Manson would be the recipient of the 2018 NME Icon Award at the VO5 NME Awards on February 14th.
“I am quite shocked but delighted to be recognised by NME with this award,” said Manson.
“I read it religiously as a young teen and well into adulthood, back when it was still a broadsheet, learning so much between its pages about music and the trailblazing artists who filled its pages.”