There’s a certain expectation that comes with a new release from Kim Cameron. For years, the Miami-based artist has been a reliable source of high-energy, deep house anthems, music precision-engineered for the dance floor. Her name is synonymous with movement, with the kind of infectious hooks that have propelled her up the Billboard and iTunes charts. So when a new track of hers begins not...

Listening to Libby Ember’s single “Alibi” is a study in strange emotional temperatures. The sound is a down-tempo, sun-dusted blanket of soft guitars and gentle synth pads, the kind of arrangement you’d put on to feel safe. But the feeling it leaves behind is a deep, architectural cold, the kind you find in the shadowed corners of an old stone church long after the...