"Forever Your is originally a song that Avicii started working on in Malibu in March 2016 after Sandro showed him his demo. At the time, Avicii was taking a roadtrip from Los Angeles to Miami to work on new music that he would premiere at Ultra Music Festival that year. "Forever Yours" was one of several songs worked on during this trip.[citation needed] Later in 2016 Avicii played another version of the track at his Ushuaia closing set.[3] However, Avicii could not release a final version of the song before his death. Norwegian DJ Kygo and Swedish singer and songwriter Sandro Cavazza reproduced the song for official release. Although the entire production was remade from scratch, Cavazza and Kygo took the liberty to use Avicii's chords from the well known UMF 2016 version. Cavazza and Kygo's version was performed at the December 2019 Avicii tribute concert.[4] Cavazza previously featured on Avicii's 2017 single "Without You" and featured on two songs from Avicii's 2015 album Stories, "Gonna Love Ya" and "Sunset Jesus". Sting and Dominic Miller are also credited as "Forever Yours" samples Sting's song "Shape of My Heart".[5]
During his "Crowning of Prince Liam" Tour, Avicii worked on the song in Monument Valley,[6] before performing the first version at Ultra Music Festival.[7] During his 2016 tour, he produced a new version, which he primarily played at his Ibiza residencies. This version was held back from release for almost nine years, until it was featured in the Netflix documentary Avicii - My Last Show.[2] Afterwards, Avicii re-entered the charts for the first time since his death.[8] Pophouse Entertainment and the Tim Bergling Estate officially released this version on 14 February 2025.