The Icelandic outfit say, “We are fans of Post Malone and love the song."
The upcoming shows include appearances at the New Orleans Jazz & Heritage Festival and the Governors Ball in New York.
The new track features on the fast-rising outfit's upcoming full-length album 'Fever Dream' out 26 July via Republic Records.
The Icelandic stars will also appear on 'The Tonight Show with Jimmy Fallon' (NBC) on 15 May
The Icelandic outfit's third album, 'Fever Dream', will be released through Republic Records on 26 July.