Bobby Azarbayejani and Aashish Gadani are the hardest-working visual production duo in Seattle. Performing as Coldbrew Collective, Azarbayejani and Gadani provide live visuals at shows to accompany musicians, projecting video they design from their computers onto a screen beside the performers. For their monthly residency at the tape night HISSSSSSS (March 25 at Vermillion), they use a mash-up of old live-action VHS movies, and for their monthly sets at the techno night MOTOR (March 12 at Kremwerk) or the noise night SQUALL (March 16 at Kremwerk), their visuals are more often abstract, computer-generated geometric shapes in psychedelic colors and patterns. They usually tailor their visuals to the type of music or venue, but the thing all their visuals have in common is a confounding synthesis of analog and digital technologies…