According to Rolling Stone, EDM producer Calvin Harris has tapped crooner Sam Smith for his club-friendly new single ?Promises.? The new collaboration was co-written by Harris, Smith and emerging artist Jessie Reyez. This is Harris? third new song of 2018, following the PartyNextDoor collaboration ?Nuh Ready Nuh Ready? and the Dua Lipa-assisted ?One Kiss.? Smith is currently promoting his album on a North American summer tour.