Dedicated to Ankersmit's friend and collaborator Maryanne Amacher, Perceptual Geography is a wild trip into inner space, finds Daryl Worthington “When the ‘events’ of May ’68 took place, suddenly everything went quiet. The masses had their fill of the ‘underground,’ and freedom had been expressed on the streets,” writes François Bayle in an essay in Spectres: Composing Listening. Tracing the history of experimental music in France, he recalls the French protests of 1968 “sweeping away any desire to come back into an auditorium to listen to a concert of electroacoustic music.” It was a temporary blip. Thomas Ankersmit’s Perceptual Geography is acutely visceral, brilliantly dynamic electroacoustic music – it even had its live premiere on the Acousmonium, the diffusion system designed by Bayle. When more forces are competing for our attention and our time increasingly enclosed, the piece’s rendering to CD and mp3 also provides a conduit to a temporary, portable freedom.