1977 was the debut year of two underground LA classics, Charles Burnett's Killer of Sheep and Larry Clark's Passing Through. Rediscovered last year, both films offer honest representations of African-American life during the rough-and-tumble '70s. The latter, which screens tonight, focuses on a jazz saxophonist and his band, who struggle against a corrosive stream of big-business prejudice to start a record company, while the innovative, restless sounds of Sun Ra, John Coltrane, and Charlie Parker fill the air. Director Larry Clark conducts a Q&A afterward.