Karaoke (1996)

Daniel Feeld is a screenwriter with pains in his gut and a new screenplay called "Karaoke", about a girl named Sandra who works in a seedy Karaoke bar and is murdered by a lowlife named Arthur "Pig" Mallion. But whenever Daniel looks around, real people seem to be speaking his dialogue in real situations that mirror the script, including a beautiful young girl named Sandra who works in a Karaoke bar owned by a Mr. Mallion. Meanwhile, Balmer, the film's director, is in a spot of trouble with the leading lady of the film.