Mass Ordinary
Fixed parts of the mass – the same every time. Kyrie, Gloria, Credo, Sanctus, Agnus Dei
Ars Nova
Music of 14th century France featuring complex rhythms.
Ars Nova treatise
Philippe de Vitry
A compositional device of the Ars nova combining melodic patterns with rhythmic patters.
musica ficta
Performance practice where the performers raised or lowered pitched to avoid undesirable intervals.
Melodic line is split between two voices. Used in Ars Nova.