Guido Sodo has also written and conceived music for the theatre, and as a performing stage musician worked with numerous actors including Marco Manchisi (Letture Eduardiane, 2000; Il corpo di Totò, 2005), Francesca Mazza (Nu pate teneva sette figlie femmene, 1997; Plurale femminile, 2001; Donne Resistenti, 2004; Fiabe nordiche, 2006; Una città perfetta, 2009), Angela Malfitano (Un sacchetto di biglie, 2005), Valentina Capone (Suite Lady, 2009) and Enzo Moscato (Embargos, 1995).

He directed the musical score and performed as a musician in Viviani's play Zingari directed by Davide Iodice and with Nino D’Angelo, Angela Pagano and other actors, a show produced by the Mercadante Repertory Theater in Naples that toured in 2006-2007 in all of the major Italian repertory theaters (Naples, Rome, Catania, Perugia, Ancona, Bari, Bologna, Modena).

Also with the Mercadante Theater, he composed the music and performed on stage in Mimmo Borrelli's ‘A Sciaveca, directed by Davide Iodice, a play that was presented at the Spoleto Festival in 2008.

He is presently composing the music for Il Fanciullo Allegro, written by the bolognese playwright and actor Vittorio Franceschi.