"Past Won't Leave My Bed" is a song by Japanese-Australian singer-songwriter Joji, released on 7 November 2025 as the third single from his fourth studio album Piss in the Wind. It was produced by Dan Farber.
According to sheet music published on musicnotes.com, "Past Won't Leave My Bed" is written in the key of F major and follows a tempo of 70 beats per minute.
The song is a piano ballad; the production begins with a minimal piano line before developing into a richly textured arrangement, which along with Joji's vocal performance has been described as nuanced. During the chorus, fuzzy guitar chords accompany the piano. Lyrically, the song is about struggling to let go of a past relationship. Joji describes being unable to stop thinking about the past as he is constantly reminded of his ex-girlfriend in his surroundings and finding relief only in sleeping, though he acknowledges its fleeting nature.
The music video was directed by Ethan Eng and released alongside the single. Filmed in a found footage style, it sees Joji hitchhiking across North America and engaging in dangerous behavior with suspicious people.