 Muñoz's sculptures were created primarily with paper maché, resin and bronze.In addition to sculpture, Muñoz was interested in the creation of auditory arts, creating some works for the radio.One of his more recognized auditory works was a collaboration with British composer Gavin Bryars in 1992 called "A Man in a Room, Gambling", which consisted of Muñoz explaining card tricks over a composition by Bryars.