The three girls started making metal music at high school, but they never thought they could make history for Indonesia at Glastonbury.
The band they formed - Voice of Baceprot - are playing the festival this year and when they found out they'd been invited they were “confused”.
“Because we didn’t know how exciting [the festival] is… We didn’t know what to do next,” the band’s lead singer Firdda Marsya Kurnia said.
The pressure was on after the trio realised they would be the first Indonesian band to play at Europe's largest music festival. Headliners at this year’s five-day festival include Coldplay and Dua Lipa.
Voice of Baceprot - made up of Marsya, drummer Euis Siti Aisyah and bassist Widi Rahmawati - are performing on Friday. Baceprot (pronounced “bah-che-prot”) means “noise” in Sundanese, one of the most widely spoken languages in Indonesia.