MANCHESTER, TN - JUNE 10:  Recording artists Hayley Williams (L) and Lauren Mayberry of Chvrches perform onstage at What Stag
Jeff Kravitz/FilmMagic for Bonnaroo Arts and Music Festival

Paramore leader Hayley Williams just made her first-ever appearance at Bonnaroo, as a special guest during Chvrches' main stage set on Friday night. Williams joined the Scottish electro-pop trio for the performance of a new version of "Bury It," released on Thursday.

The sunset performance was a true duet between Williams and Chvrches frontwoman Lauren Mayberry, as the two traded verses and then harmonized on the fiery hook. Sporting lime-green hair and matching eyebrows, Williams head-banged during the song's climax and embraced Mayberry at the song's conclusion.

"Bury It" featuring Williams has received a new studio version after Chvrches performed the track a handful of times with Williams, including on the Parahoy! cruise earlier this year. The song sans Williams appeared on Chvrches' Every Open Eye album last year.

Still to come tonight at Bonnaroo: Halsey, LCD Soundsystem, M83 and Tame Impala. Coming next year to Bonnaroo, hopefully: Paramore proper.