Marcos Alonso is a programmer, designer and musician whose work is born out of his passion for music and computers and how to use new technologies for music performance. During his research work at the Music Technology Group of the Universitat Pompeu Fabra he co-created the Reactable, where he was mainly responsible for the graphics and interface design of the instrument. Since its presentation in 2005 the Reactable has been internationally acclaimed and received many worldwide awards. In 2009 he co-founded Reactable Systems where he currently works. He was born in 1980 in Barcelona.