Perhaps the most characteristic feature of the 20th-century musical landscape is the stylistic pluralism, visible not only across numerous schools and movements, but also in the language of individual artists who, unrestricted by the prevailing composition rules, would reach for various means of musical expression. The most crucial issues addressed by post-Romantic composers included the sound colour, important both for pre-war impressionists and representatives of sonorism. The CD presents pieces from the beginning of the 20th century, performed by an international group of musicians related to the Belgian performance school, in which the play on the sound colour takes place in the chamber space. The leading pair of instruments are flute and viola - a couple which perfectly complements each other; its sound inspired a number of composers; e.g., Debussy, Huybrechts, Roussel, Schulhoff.