Born in Gorizia, he graduated in composition from the Giuseppe Verdi Conservatoire in Milan and attended advanced courses at the Accademia Chigiana in Siena and the Scuola Civica in Milan. In 1991 he went to Paris to study new technologies at IRCAM, where he was later a research fellow (1993–95). After a series of successes at international competitions in Amsterdam, Frankfurt, Graz, Milan, Stockholm, and Siena (1st Prize at the 1989 Casella Competition), Romitelli’s music was frequently performed at such prestigious festivals as Musica in Strasbourg, Présences, Ars Musica in Brussels, Les Saisons de l’IRCAM–intercontemporain, Venice Biennale, and Milano Musica, by ensembles and orchestras like Ictus, L’Itinéraire, Court-circuit, Ensemble intercontemporain, Musiques Nouvelles, ensemble recherche, Alter Ego, RAI National Symphony, and Radio Symphony Orchestra in Berlin. He received commissions from the French Ministry of Culture, Musiques Nouvelles, Ictus, Radio France, IRCAM, Gulbenkian Foundation, and Royaumont Festival.
Selected works: Kü for 14 performers (1989), Nell'alto dei giorni immobili for 6 musicians (1990), Natura morta con amme for string quartet and electronics (1991), Seascape for Paetzold contrabass recorder (1994), EnTrance for soprano, ensemble and electronics (1995), Domeniche alla periferia dell’impero. Prima domenica for four instruments (1995–96), The Nameless City for orchestra (1997), Professor Bad Trip: Lessons I–III for instrumental ensemble and electronics (1998–2000), Blood on the Floor, Painting 1986 for instrumental ensemble (2000), Domeniche alla periferia dell’impero. Seconda domenica: hommage à Gérard Grisey for four instruments (2000), Flowing Down Too Slow for orchestra and live electronics (2001), Amok Koma for strings, percussion and electronics (2001), Trash TV Trance for electric guitar (2002), Dead City Radio. Audiodrome for orchestra (2003), An Index of Metals, video opera to texts by Kenka Lekovich (2003).