When you want to generate the effect of Jim Henson recording Meredith Monk at the BBC Radiophonic Workshop, consider building yourself something like the ECHOOOOOOOO here. This eight-channel “robotic choir”, constructed for Poland’s Arts+Bits Festival, processes the singer’s voice through eight independent channels, which respond with movement and output based on the frequency and amplitude. They also look like weird giggly little robots while they do it.