Dia de Los Muertos Art and Music Festival in Uptown Whittier Uptown Whittier was filled with altars, vendors, food trucks, performers, face painters, with live music and a car show. By Noah Garcia, Associate Editor Oct 17, 2018 Casita del Pueblo’s annual Dia de Los Muertos Art and Music Festival filled the streets of uptown Whittier, Sunday, October 15. The streets were filled with altars, a car show, vendors, food trucks, performers, face painters and live music.