Anthony Braxton is a phenomenon that must be studied with tweezers and a sharp focal length. Never where one would tend to categorize him, always focused on the mutation of a music related to jazz as well as on contemporary experiences. Capable of inventing musical worlds, of digging into tradition, capable of composing pieces for a hundred tubas, capable of taking as a rule the theorems of Pythagoras or the topography of amusement parks. With this heterogeneous sextet whose name could be seen as programmatic: Echo Echo Echo Mirror House Musics, Braxton links reverberations, resonances, symmetries, calls and responses, to the eternal ceremonial part of his music. There, a sound utopia curls up, full of a desire for otherworldliness, that came to balance reality and imagination.