A lunatic who thinks he is Schumann interrupts a family picnic; a Croatian refugee boy, whose one remaining link with people is his ability to play the guitar beautifully, enters and disturbs an Italian woman's life; a failed composer upstaged by a young rival with the same name eats his heart out in Algiers; the pupil of a master in a Chinese fable ruins a whole tradition by writing his own tunes. In the title story, Mozart returns to mock his admirers. Light, coruscating and learned stories.