With its snatch of acoustic guitar providing an earthy, if distinctly computer-enabled, rhythm, “Sunday Drift” (MP3) couldn’t surprise more if it took a sudden pause for a glorious break of fog-splitting shimmer — which is exactly what it does. A free download off Mark Rushton‘s recent Hum and Drift album, the song uses that self-evident contrast (between pedestrian folksiness and heavenly aura) to its advantage, overlaying ’em for effect but playing them against each other as well. Also recommended is “Translucent” (MP3), an amorphous expanse of industrial noise, replete with the sound of approaching trains, light hiss and a pervasive unease. More info at markrushton.com.