Billie Eilish’s brother and collaborator Finneas has said that the “bad guy” singer’s second album will take an “experimental” turn.

Finneas (real name Finneas O’Connor) spoke to Billboard at the American Music Awards, saying that the follow-up to 2019’s When We All Fall Asleep, Where Do We Go? will see Eilish “evolve” her sound. He said: “I think so far, in album two… there’s just a lot of stories we felt we didn’t get to tell yet.”

He continued: “We’re just trying to tell all those and we’re being a little bit experimental. I think if you’re not trying to change things a little bit, you’re not evolving. So I think we’re just trying to embrace everything that we are proud of in our music and also just try new things and experiment and give people stuff to look forward to.”

The 22-year-old also admitted that him and Eilish experience “creative disagreements” but maintains, “that’s probably the number one reason why collaboration is good”.

He said: “You disagree with each other about things and then what we always say is whichever one of us is more passionate about the issue is the winner because if you care about something enough to fight for it, that means it’s probably a good thing.”

Eilish recently took home two awards for Best New Artist of the Year and Favourite Artist at the AMAs, which she attended wearing head-to-toe in the classic Burberry check, paired with a fresh off the runway beaded face mask taken from the label’s SS20 collection. Her T-shirt was printed with ‘No Music on a Dead Planet’ in response to the climate emergency we’re currently facing.