“The Cloud Forest is one of the most beautiful places I’ve ever seen in my life"
Other artists on the touring fest’s line-up include Finneas, Fontaines D.C., Fred Again.., Girl In Red, Slowthai and Turnstile
The singer also said she's "going to hopefully make another album in the next year"
The song's video features footage from Billie Eilish's recent UK and European tour
'Ukraine: Answering The Call' airs this Sunday (July 3)
The pair won the Academy Award for Best Original Song for 'No Time To Die' earlier this year
She's joined by the likes of Yungblud, Ibeyi and Emily Eavis
Matthew McConaughey and Olivia Rodrigo have also spoken publicly about yesterday's mass shooting in Texas (May 24)
Fans can win tickets to attend the show in person
“I’m Billie. Wanna jam?”