At its core, Thundercat is a Schwinn cruiser from the 1970s whose creaks and groans of a life well lived are detected by a piezo microphone and manipulated through real-time digital signal processing. A Teensy microcontroller running a harmonic resonator written in the Faust programming language breathes life into the mechanical grievances picked up by the piezo, and rider inputs control the parameters of sound synthesis by way of sensors integrated into the mechanics of the bicycle. Dark, raw, and surprising, Thundercat is a wild ride.