The robotic musical instrument system MARIE (Monochord-Aerophone Robotic Instrument Ensemble), created by Expressive Machines Musical Instruments. This modular electroacoustic robotic instrument system (MEARIS) comprises CARI (Cylindrical Aerophone Robotic instrument), a clarinet-like musical robot (left), and the robotic string instrument AMI (Automatic Monochord Instrument), right. Photo credit: Troy Rogers