Bille Joe Armstrong said it was an honor to "share the stage" with Billie Eilish at the FireAid benefit concert, which is expected to raise over $100 million in donations.

Billie Joe Armstrong can't say enough good things about that other Billie. Following Sunday night's 2025 Grammy Awards, the Green Day frontman told Billboard that he was still buzzing about sharing the stage with Billie Eilish at last weekend's all-star FireAid benefit concert.

Billie Joe Armstrong says it was an "honor" to perform with "pretty awesome young lady" Billie Eilish. The 52-year-old rocker's band Green Day duetted with the 'Birds of a Feather' hitmaker on their 2009 track ‘Last Night On Earth’ at the FireAid benefit concert for victims of the Los Angeles wildfires at the Kia Forum on January 30.