[1] Stirling stated that she was inspired by the Greek goddess Artemis, and drew parallels to her own challenges.

[2] The single artwork was the first time fans saw the Stirling as a Manga character for her then-upcoming comic book series that was launched alongside the album.

[3] Released on the same day as the single, the music video for Underground was filmed in Los Angeles.

Later in the video, which shows a future world city, Stirling appears as the Greek goddess Artemis in the clouds.

"[6]"Underground" spent two weeks on the Billboard Dance/Electronic Digital Song Sales chart, peaking at number 6.