“@ollie_salter_: @cleanbandit Any clues to the mystery cover?” It was in a major key but now it's in a minor key 😜
— Clean Bandit (@cleanbandit) January 15, 2014
Turns out that they were referring to Lorde's 2013 breakout hit, 'Royals'. In classic Clean Bandit style, they delivered. The combination of classical instruments combined with the dance/electronic/house style we associate them with provided for this. Listen below.