Originally Les Yper-Sound (also sometimes called Les Hyper-Sound) was a fake band consisting of Michel Colombier and Pierre Henry. On this recording (which was released in 2016) there are 5 tracks written by the originals and 10 written by Jas Walton [sax] and Miles Arntzen [drums] who are the current version of Les Yper-Sound. The “remarks” on each track will tell you everything you need to know. My favorite remark is “about the track Potato Brain: “Moroccan Qarkabeb. Dramatic. Lights off.” It’s playful, tongue-in-check and lot of fun, after all it’s on clear vinyl – do not miss this one!