Collaborating for more than two decades, Oren Ambarchi and Will Guthrie arrive at a place of expansive, intuitive interplay on ''Cold Shoulder.'' Their musical dialogue, which previously moved through abstraction and volatile electro-acoustic experimentation, now unfolds with relaxed confidence, melding drifting Leslie tones, shimmering percussion, and fluid pulses that emerge and dissolve. It's a document of experience; music that feels freer, more direct, perhaps quietly fearless.