Clue 10 was... AVICII
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Summertime Ball 2015 Line-Up: 14 Clues To Help You Guess This Year's Stars
10. Clue 10 was... AVICII
Not only did you alarm clock wake up in time to buy #CapitalSTB tickets, it also reminded you of the Avicii hit 'Wake Me Up' - didn't it?