Billy Ilish is astonished Kochela Weekend 2 participants with Haley Williams on Saturday night for a rare performance on Paramount's 2007 hit "Misari Business".

Williams’ appearance  Eilish and her brother Finneas has sung“Your Power” from her most recent album. 

There was a break after the song ended, where expectations filled the air and Hilsa sat on a stool to introduce her guest.

Saturday night marked a particular performance of the song, which Williams has separated herself from in recent years.

Last weekend, Hilsa de la Soul brought Damon Alburn, a gorilla celebrity, to perform "Phil Good Inc." with Posdanuos.