Born in San Martin, Buenos Aires, Argentina. Began composing for Italian films in 1960 and has since written scores for over 135 feature films. Early on in his career, he composed scores for Spaghetti Western films, including DJANGO (1966), IL PREZZO DEL POTERE (1969, THE PRICE OF POWER) and IL GRANDE DUELLO (1972, STORM RIDER). In the early 1970s, he collaborated with Italian progressive rock bands New Trolls, Osanna and Il Rovescio della Medaglia. In recent years, Bacalov has also composed significant works for chorus and orchestra, including his Misa Tango, a work setting a Spanish-language adaptation of the classic liturgical Mass to the tango rhythms of his native Argentina. The standard Mass text has been significantly truncated in accordance with Bacalov's desire that the work appeal to those of all Abrahamic faiths: Christians, Muslims and Jews. All references to Christ except as the Lamb of God in the Agnus Dei have been deleted. The Credo has been reduced to "I believe in one God, the Almighty, maker of heaven and earth. Amen." Misa Tango debuted in Rome with Placido Domingo as solo Tenor in 2000 and was later recorded by Deutsche Grammophon with Domingo (Tenor), Ana Maria Martinez (Mezzo-soprano) and Hector Ulises Passarella (bandoenon) as soloists. Bacalov recently composed Cantones de Nuestro Tiempos (Psalms for our Times): The Cambridge Psalms, a commissioned work with text from the Psalms of David for baritone and soprano soloists, orchestra and chorus, which had its world premiere at Sanders Theatre in Cambridge, MA, in spring 2006 by the Cambridge Community Chorus (William E. Thomas, Music Director). Two of his songs were used in Quentin Tarantino's KILL BILL, VOLS. 1 (2003) and 2 (2004).  Nominated for Music Scoring Awards (Scoring or Music Adaptation or Treatment) 1966: THE GOSPEL ACCORDING TO ST. MATTHEW  Achievement in Music (Original Dramatic Score) 1995: IL POSTINO (THE POSTMAN) 2 nominations, 1 Award