Finneas has revealed his dream collaborator is Rihanna.
Speaking at the 2026 Tribeca Festival during a conversation with composer Anthony Willis, the songwriter and producer – who plays a key role in the career of his pop megastar sister Billie Eilish – said he would jump at the chance to work with the Diamonds hitmaker, but his shyness means he’d never actually ask her.
He said: “I’m taking notes from the distance so I can just keep doing that also.”
Finneas also revealed that it was seeing pop punk legends Green Day as a kid that made him want to become a musician.
He said: “I really have always wanted to make music for a living.
“I think I knew that from the time I was like 10 or 11 and I went and saw Green Day play a concert and I thought, ‘I can’t believe that’s a job. I want to do that job.'”
Billie actually got to share a stage with Green Day at the FireAid benefit concert for victims of the Los Angeles wildfires at the Kia Forum in 2025.
At the time, frontman Billie Joe Armstrong said it was an “honour” to perform with the “pretty awesome young lady”.
Green Day duetted with the Birds of a Feather hitmaker on their 2009 track Last Night On Earth.
The 54-year-old rocker later spoke about being a huge fan of the 24-year-old singer and how they bonded over their shared name.
He told Billboard: “It’s funny, when [Eilish] first started coming out, I saw some footage of her on Instagram – I saw some merch, and there was a headband that said ‘Billie’ with an ‘ie’, and I said, ‘I have to have that!
“And then so she sent me a bunch of merch that had ‘Billie’ on it, and I was like, ‘Yes!’”
He added: “I saw her play a couple of times and she was fantastic, and you just knew something special was gonna happen with her. But the fact that we got to play together… she’s a pretty awesome young lady, and it was an honour to be able to share the stage with her.”
The pair also previously interviewed each other for Rolling Stone magazine in 2019, during which the Boulevard of Broken Dreams hitmaker explained why he is so drawn to the Bad Guy hitmaker’s music.
He told her: “I know this sounds [weird], but I always gravitate toward music that sounds like freedom.
“And that’s what I get from your music. It’s like an earnest person that’s expressing themselves and incorporating new sounds. Some of it sounds like jazz to me, if that’s cool to say?”