One of the song's most defining features is the sultry, hypnotic vocal performance. While many listeners initially wondered who was behind the voice, it was actually . Interestingly, her vocals on the final track were taken from the very first take she recorded for the initial demo. Despite her massive contribution, she remained uncredited on the official single release. Global Chart Dominance "How Deep Is Your Love" was a commercial juggernaut:

: In its first week alone, it captured 2 million U.S. streams , with 74% coming from Spotify. The Iconic Music Video Starring Gigi Hadid

Following the high-energy EDM of his previous album Motion , Calvin Harris wanted to try something "a bit different" for the summer of 2015. He pivoted away from explosive festival drops toward a more influenced by 90s Eurodance.