This paper describes a software package developed in MAX for using the gestures of a performer as control factors
for music, via Buchla's ‘Lightning’. The software not only tracks the x and y coordinates of each transmitter, but also
calculates the direction, speed and acceleration of their movements in the whole space and relative to each other. The
program is very configurable, allowing calibration of the data evaluation and adjustment of the sampling rate of the
values sent by the Lightning. These features have been applied to composition in two different areas: an interactive
choreographic environment, and a performing interface for musicians.