Listening to Elena C. Lockleis’s new single, “Mind - Vs. - Heart,” feels like witnessing a civil war fought entirely within a single nervous system. The sound is an intimate knot of pop architecture, the kind Julia Michaels patents in her sleep, where a confession arrives not as a ballad but as a skittish, rhythm-driven pulse. You feel the frantic heartbeat right there in...

The ascent of Daniel Nwosu Jr., better known by his stage name Dax, from the middle of Wichita, Kansas, to the forefront of the international music scene has been watched by the whole world of music. From the time of his early mixtapes, like as the influential "2pac Reincarnation Vol. 2: The Beginning," to the time of his viral duet "Cash Me Outside" with Danielle...