The risk inside a good day gives Biernacki’s “Up & Down” its pulse. The Kraków songwriter and producer places a close vocal over piano, delicate percussion, bass and electronic detail, then lets the pressure collect rather than explode. This is polished alt-pop with a melancholic streak, built for the listener who knows that relief can sometimes make the mind start looking for the next thing...

From the German city of Delmenhorst, DJ Snudi has dispatched "Sugar Daddy," a single that lands with the curious thud of a velvet-wrapped brick. The track presents itself as a straightforward club banger, but listening to it is like trying to have a serious conversation in a room where someone keeps changing the lighting from sterile white to a pulsing, humid red. It’s disorienting,...