In his work Contropasso (1998–9) Michelangelo Luponecollaborates with Massimo Moricone in the dance showcase piegapiagaachieving direct interaction between dancers and live electronicsperformance. The choreography takes advantage of acoustic events asgenerated by three dancers and further elaborated on via computer by thecomposer through use of granular algorithms and digital filtering, allowingthe construction of the musical events to occur in real time. The liveelectronics performer changes sound parameters in relation to the dancers'movements by use of the program SDP – Sonorous Drawing Plane(S. Lanzalone) – created specifically for the control of differentsynthesis algorithms allowing them to be processed on systems such asFly30 (CRM) and Mars (IRIS). SDP reads and converts computer mouse data asthe operator creates lines corresponding to performance gestures, thuscreating both visible and audible output. This software allows a singlegesture to control more than one parameter, thus creating complex changesin the audio programme output. The article deals with differentcompositions, performances and didactic situations the author hasexperienced using SDP.