In an allusion to Michel Chion’s ‘Dix études de musique concrète’, this collection of acousmatic moments represents a meditative opportunity for Denis Dufour. Sorting through his repertoire, it aims to seek out and identify characteristics and easily recognizable expressive habits whose clarity brings them close to the art of melody in an approach borne of entomological specimen classification and playful staging at the same time. Neither text nor theatrical contexts. Twelve short pieces; melodies without words (or a few words only), some of which are borrowed from other bits of his music (Suite en trois mouvements, Le Lis vert, Dix portraits) and that he wanted to highlight, harmonize, orchestrate, amplify. So here are melodies of pitches, of timbres, and also of meanings, spaces, objects… Acousmatic melodies, then, because the composer wanted to show the possibility of inventing a form or melody in this specific art form that might be to instrumental melody what photography is to painting.