Originally released in 2006, Rainbow remains one of Boris’ most transportive recordings: heavy but unforced, suspended somewhere between slow-motion psychedelia and late-night amplifier glow. Nearly twenty years later, the newly released Rainbow 2 extends the world of the original with two side-long pieces drawn from the long out-of-print Rainbow box set, pushing further into spacious drone, low-end pulse, and hazy dual guitar interplay.