“Sky” is a collaborative track by Norwegian-British producer Alan Walker and Danish producer Alex Skrindo, released on June 9, 2017. The song was featured in the compilation album “Insomniac Records Presents: EDC Las Vegas 2017.”

Musically, “Sky” is an instrumental track set in common time with a tempo of 130 beats per minute. It’s written in the key of G minor, following a chord progression of Gm–E♭–B♭–F.