What major developments, as heard in the ars nova style, set Western music on a new path during the late-Middle Ages

Western music: Ars Nova. When the influential treatise Ars Nova (“New Art”) by the composer Philippe de Vitry appeared early in the 14th... These innovations, which were anticipated to a degree in the music of Pierre de la Croix (flourished last half of 13th century), are marked by the emancipation of music from the rhythmic modes (dominated by triple metre) of the preceding age and by the increased use of smaller note values.

Explanation: