The track samples the chorus from the First World War marching song "Pack Up Your Troubles In Your Old Kit Bag
." The Guardian
asked Doolittle what inspired her to use "Pack Up Your Troubles?" She replied. "I always knew that song, and I love the optimism of it. I also love songs like 'We'll Meet Again
.' I wanted to write a feel-good song with a happy vibe. There are so many horrible things going on out there, like war and poverty, but people lose their perspective, because for most of us, things aren't that bad. So we took that song to a happier level - there's a lot of darkness behind the original because of the war."