Sound of Walking Away is an ID track from American DJ Illenium, featuring Estonian singer Kerli. The song was first previewed at Snowglobe in December 2016, before being teased again on February 12, 2017 at Crush SF. Illenium confirmed the single in an Reddit AMA:
Sound of Walking away is [my favorite song] right now. Its an unreleased song with Kerli. I’ve been playing it out at shows.
On April 20, Illenium announced that the single will be out on April 24, with also releasing the official cover. 
Note: not official lyrics.
- ↑ Illennium's tweet: "NEW MUSIC MONDAY!!! SO STOKED!!! @kerlimusic #soundofwalkingaway" on Twitter. ILLENIUMMUSIC. April 20th, 2017.