Tom Service ponders brevity in music - how short you can go? From Beethoven bagatelles to Webern's chamber miniatures, short doesn't need to mean lightweight. Short pieces may be intricate as a netsuke or as simple as a sonic doodle. Or suggest a fragment of something larger. Tom talks to sonic artist JLIAT, who has made a piece lasting 1/44100 of a second. But he's thinking of shorter pieces.