“Why?,” from Matmos’s album Return to Archive , features sounds of humans trying to communicate with animals (dolphins, frogs) and other humans (children, people without larynxes) over a hasty four-on-the-floor beat. Matmos and guest artist Evicshen cut, loop, and layer 92 frog-patterns, compress the splashes of dolphins in water, and lock slices of enigmatic vocal experiments into pulsing, mutating loops.