FILM/VIDEO: The second night of the sound. at REDCAT program is devoted to a rare screening of Werner Penzel and Nicholas Humbert’s Step Across the Border, an award-winning documentary on Frith’s music. This “celluloid improvisation” features performances by Frith and appearances by Zorn, Arto Lindsay and the late Tom Cora, among other luminaries of the international avant-garde. See http://redcat.org/season/0708/mus/sound.php. ($)