An hour-long interview wasn't enough to cover but a fraction of Lou Harrison's many accomplishments, but Eva Soltes and I did our best to hit some of the high points. Her new documentary, "Lou Harrison: A World of Music," uses footage she shot during her decades-long friendship with the eminent American composer, musical innovator and political activist, who died in 1982. The film was recently screened as part of the Cabrillo Festival of Contemporary Music, which Harrison helped found and which is honoring him this year with a performance of his Third Symphony.