The idea of the ’Traces’ series is to unearth from the GRM Archives short, forgotten or ignored pieces of music. This second volume, which gathers works prior to 1976, features the “early” works of four composers who each went on to leave a unique trail in music. In addition to reflecting the extraordinary vitality of the musical experimentation of bygone times, ’Traces’ aims to reactivate the audibility to such pieces, some of which have never been released before.