In A Memoir of the Future, British psychoanalyst Wilfred Bion represents the psyche by staging numerous voices which represent fragments of personal identity, each with its own acoustic contours. These various agencies address each other by means of mockery and invective, so that phonetic or musical traits such as rhythm, melody or polyphony tend to prevail over individual identities. This paper focuses on Chapter 23 to show how a paradoxical space is constructed, and how the unconscious is defined in terms of a musical topography.