The music of Dan Snaith, the Canadian producer-artist known as Caribou, defies easy categorization. His finest hour, 2010’s “Swim,” was part house, part indie-pop and part psychedelica. “Can’t Do Without You,” the first single from follow-up “Our Love” (Merge, Oct. 7) works that eclectic sweet spot once again, blending the visceral rush of EDM with an introspective warmth rarely associated with bass drops. The track begins in chillwave territory, fractured vocal samples swimming in a sea of frothy synth pads. Gradually, the mix reveals a live rhythm section and ghostly voices repeatedly chanting the title. When the inevitable climax hits, as a hi-hat pushes the groove skyward, the song has already started its slow fade-out.