Moscow’s Galun builds his productions using only his mouth (well, and a computer). But this fact is much more than just a gimmick, as the singular choice of sound sources makes for some intriguing sonic layers as displayed on “Rainbow,” a cut from Galun’s recently released EP, appropriately enough titled Meltwith Myvoice (artwork above). Beginning with what almost sounds like an electric razor, “Rainbow” jumps all over the place, reaching almost operatic heights and then plunging to rumbling lows. Over the course of its four-minute runtime, it becomes apparent that even though the the Russian producer is only using his own voice, he’s nonetheless able to digitally manipulate quite the sonic arsenal.