If there's one person who doesn't need to be convinced about the importance of sound in films, it's the presenter of a radio programme about movies! Sound and pictures have been two halves of the impact ever since Al Jolson told a shocked audience "You ain't heard nothing yet."
But it's taken a while for sound to get the attention it deserves, until now. A new documentary gets its first screening here at the International Film Festival.
Making waves: the art of cinematic sound may have a slightly po-faced title, but for anyone with any interest in film - or who's even seen one - it's absolutely riveting. Simon Morris talks to director Midge Costin about the great sound innovators, including Orson Welles, George Lucas, Steven Spielberg - and Barbra Streisand!