Calvin Harris has a habit of making ubiquitous summer jams. But he really threw down the gauntlet earlier this year when he tweeted in Feburary, after releasing " Slide ": "All my songs in 2017 have been sonically designed to make you feel f****** incredible." He makes good on the promise today with a three-headed pop hydra with the seasonally forward-looking title "Heatstroke."
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