The Aussie Secret Hiding In One Of 2019's Biggest Songs

It was undeniably one of the biggest songs of the year, and now Billie Eilish has revealed the Aussie secret hiding in "Bad Guy".

In an interview with 'Rolling Stone', Billie and her big brother Finneas revealed the unique inspiration behind the track's massive chorus and how a visit to Australia actually played a big part.

"My mum and I went for a walk in Sydney," Billie explained -- saying when she was standing at a pedestrian crossing, the noises it made struck her as curious.

"The crosswalk is this little, like, you press it, it's like 'doop doop'. That's the sound it makes when you have to wait," she continued.



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Finneas added that the siblings decided to name the sound "Grart" -- which meant Billie was able to locate the actual voice memo she recorded in Sydney years ago.

"I was looking through my voice memos and I saw something that said 'grart' and I was like what the f**k," she said, laughing.

Finneas then showed how they were able to use the shift from the paced beeping of the red man to the intense 'doop doop'-ing pedestrians hear when the light changes to green.

Apparently someone else who didn't know about the crossing lights musical effects on "Bad Guy" was Billie's dad who -- when he was in Sydney with Finneas pointed out the noise the crossings make.

"I was like, 'Yeah it's the chorus for 'Bad Guy', he was like 'What!?' and I was like... never mind, man."

The pair also revealed the other strange inspirations that made their way into the track like the Disney series 'Wizards of Waverly Place' and the game 'Plants vs Zombies'.

Check out the full interview below.

Featured image: Getty Images.