Prolation Prolation Prolation is a term used in the theory of the mensural notation of medieval and Renaissance music to describe its rhythmic structure on a small scale, as opposed to "tempus", which described a larger scale. The term "prolation" is derived from the Latin "prolatio", first used by Philippe de Vitry in describing Ars Nova, a musical style that came about in 14th-century France. Prolation, together with tempus, corresponds roughly to the concept of time signature in modern music. Prolation describes whether a semibreve (whole note) is equal in length to two minims (half notes) ("minor prolation" or "imperfect prolation";
A Dance to the Music of Time (painting) A Dance to the Music of Time (painting) A Dance to the Music of Time is a painting by Nicolas Poussin in the Wallace Collection in London. It was painted between about 1634 and 1636 as a commission for Giulio Rospigliosi (later Pope Clement IX), who according to Gian Pietro Bellori dictated its detailed iconography. The identity of the figures remains uncertain, with differing accounts. The painting is well known for giving its name to the "A Dance to the Music of Time" novel cycle, though this title is first seen in a Wallace Collection catalogue of 1913. Before that