Introduction: voices of the page -- First impromptu: The other side of language or 'listening to the voice of being' -- An auditory culture. Listening in cultural context -- Rhetoric and the art of listening -- Images and echoes -- Theme and variations. Catechesis: sounding the theme -- Second impromptu: Playing ball: the art of reception -- Preaching: variations on the theme -- Third impromptu: Singing the blues -- From listening to hearing. The polyphony of prayer -- From the bottom to the bottomless.