Butler uploaded the eight-second clip to his Instagram Story, and deleted it soon after. He wrote on the clip, "Sometimes it takes 20 years to write a song."

Despite deleting it relatively soon after posting, fan accounts have already published the clip again across different sites.

Although it's not clear if the track is his solo work, fans are hoping it's a brief glimpse of Arcade Fire's new album.

Arcade Fire are yet to follow up their 2017 album Everything Now. Last year they released "Baby Mine", which featured on the Dumbo soundtrack.