Drancing is a gestural synthesis accelerometer music system (an "air instrument") under development by Dr Darren Kelly since 1996. Drancing employs triaxial-accelerometers (3D vector acceleration transducers) to synthesise music, visuals, and computer controls from human gestures, dance, and movement.

The name Drancing is derived from "Drumming-by-Dancing" (or "air drums" mode) which is just one of its many applications. It can also be used as an "air synthesizer", "air guitar", or "air piano", and to make sounds never heard or named before.