Ars Nova versus Ars antiqua

Stylistically, the music of the ars nova differed from the preceding era in several ways. Developments in notation allowed notes to be written with greater independence of rhythm, shunning the limitations of the rhythmic modes which prevailed in the thirteenth century; secular music acquired much of the polyphonic sophistication previously found only in sacred music; and new techniques and forms, such as isorhythm and the isorhythmic motet, became prevalent. The overall aesthetic effect of these changes was to create music of greater expressiveness and variety than had been the case in the thirteenth century. Indeed the sudden historical change which occurred, with its startling new degree of musical expressiveness, can be likened to the introduction of perspective in painting, and it is useful to consider that the changes to the musical art in the period of the ars nova were contemporary with the great early Renaissance revolutions in painting and literature.

The greatest practitioner of the new musical style was undoubtedly Guillaume de Machaut, who also had an equally distinguished career as a canon at Reims Cathedral and as a poet. The ars nova style is nowhere more perfectly displayed than in his considerable body of motets, lais, virelais, rondeaux, and ballades.

• Composers of Ars Nova: 
Adam of Saint Victor -  
• Maestro Piero - 
Giovanni da Cascia - 

• Niccolò da Perugia - 
 
• Notker Balbulus
• -
 
• Hildegard of Bingen - 
Jacob Senleches

Ars nova: refers to a musical style which flourished inFrance and the Burgundian Low Countries in the Late Middle Ages: more particularly, in the period between the preparation of the Roman de Fauvel (1310 – 1314) and the death of the composer Guillaume de Machautin 1377. Ars nova is generally used in conjunction with another term, ars antiqua, which refers to the music of the immediately preceding age, usually extending back to take in the period of Notre Dame polyphony (therefore covering the period from about 1170 to 1320). Roughly, then, the ars antiqua is the music of the thirteenth century, and the ars nova the music of the fourteenth; many music histories use the terms in this more general sense.

Ars Antiqua:  Almost all composers of the ars antiqua are anonymous. Léonin (late 12th century) and Pérotin (1180 –1220) were the two composers known by name from the Notre Dame school; in the subsequent period,Petrus de Cruce, a composer of motets, is one of the few whose name has been preserved.

Ars antiqua, also called ars veterum or ars vetus, refers to the music of Europe of the late Middle Agesbetween approximately 1170 and 1310, covering the period of the Notre Dame school of polyphony and the subsequent years which saw the early development of the motet. Usually the term is restricted to sacred music, excluding the secular song of the troubadours and trouvères; however sometimes the term is used more loosely to mean all European music of the thirteenth century and slightly before. The term ars antiqua is used in opposition to ars nova, which refers to the period of musical activity between approximately 1310 and 1375.