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Musical research at a Swedish burger chain has this week revealed that playing the right tunes in-store can hike customer spending by up to 9%.

Tempo, volume and image all trigger unconscious associations that get us spending (or not), apparently. So all that Spotify playlist-making you do at work isn’t a waste of time, it’s a potential sales driver!

Researchers also helpfully noted that millennials like Ed Sheeran - though science still can’t tell us why.