If you drive the Harbor Freeway, you've seen Julie Gigante, the LA Chamber Orchestra violinist. You can't miss her. She's eight stories high. She's one of the most prominent LACO members depicted in Kent Twitchell's mural, "Harbor Freeway Overture," which was begun twenty years ago. Gigante is still with LACO, and until just the other day when she talked with Off-Ramp host John Rabe, hadn't stood at the foot on the mural. Rabe also talked with Twitchell, who is still proud of his monument to the musical artists.