"Outside" is a song by Scottish DJ and record producer Calvin Harris from his fourth studio album, Motion (2014). The song features English singer Ellie Goulding and was released on 20 October 2014 as the fourth single from the album. It marks the second collaboration between Harris and Goulding, following the internationally successful single "I Need Your Love" (2013). "Outside" is included on the deluxe edition of Goulding's third studio album, Delirium.
With a tempo of 128 beats per minute, "Outside" is composed in the key of D minor. It follows a chord progression of B♭-Gm-Dm-C.
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