FOUR VOICES 5

Looking for fresh tunes? This quartet of boys each follows his own path: Australian singer-songwriter Sultan presents a polished fourth studio record; Guernsey DJ Masa, best known for A$AP Rocky collaboration “Love$ick”, has a self-titled debut; veteran UK grime artist Rascal is a high-octane acquired taste; and with his quality second album, Khloe K’s ex Montana should instead become better known for his music. ( Killer, out Fri., July 28; rest out now)