This total D.I.Y experiment is conceived by a two men abstract convoy and, as we could say, by two purists of the 4 tracks tape (cassette) recorder method & technique: 4 TTR possibilities for distortion power as well as for capturing the tracks in high speed recording. Moreover, both experimentalists respectively own the same machine through & from which the sounds are injected and ejected. Then each other send the parts captured on their respective 4TTR channels, from France to USA, from USA to France.