Rejection! Any film composer of reasonable experience has, at one time or another, had his or her music replaced. It’s an occupational hazard. Poor test screenings, creative differences, interpersonal difficulties and producer panic have all contributed to the rejection of original film scores. Since music is usually the last ingredient in the creation of a film, it is also the most vulnerable to change. Join Ross Amico for selections from discarded scores to “2001: A Space Odyssey” (by Alex North), “Torn Curtain” (Bernard Herrmann), “Edge of Darkness” (John Corigliano) and “The Battle of Britain” (Sir William Walton), this Friday at 6:00 pm.