Outside was released in 2014 as a single from Calvin Harris's album Motion, marking his second collaboration with Ellie Goulding after I Need Your Love in 2013. The song became a major dance pop hit in the UK and internationally, known for pairing Goulding's distinctive vocal with Harris's festival ready production. Short excerpts of the hook later circulated widely on video platforms and soundboards, where the recognisable chorus is reused out of context for edits, transitions and nostalgic pop references in short form content.