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An example of a prolation canon. Play ⓘ Agnus Dei from Missa l'homme armé super voces musicales, by Josquin des Prez. In this example, the first 12 bars of the Agnus Dei II of the earlier of the two masses Josquin wrote based on the L'homme armé tune, each voice sings the same music, but at different speeds. The top voice is barred in 3/4 ...
Mensuration canon, a musical composition wherein the main melody is accompanied by one or more imitations of that melody in other voices Topics referred to by the same term This disambiguation page lists articles associated with the title Mensuration .
A puzzle canon, riddle canon, or enigma canon is a canon in which only one voice is notated and the rules for determining the remaining parts and the time intervals of their entrances must be guessed. [44] "The enigmatical character of a [puzzle] canon does not consist of any special way of composing it, but only of the method of writing it ...
Protein folding problem: Is it possible to predict the secondary, tertiary and quaternary structure of a polypeptide sequence based solely on the sequence and environmental information? Inverse protein-folding problem: Is it possible to design a polypeptide sequence which will adopt a given structure under certain environmental conditions?
In a mensuration canon, each voice sings the same notes, but the length of time each note is sung differs. The opening Kyrie of Josquin's mass contains consecutive mensuration canons based on each phrase of the L'homme armé tune, with the tenor leading each and the other voices entering in turn. [ 7 ]
Each example is stated as a problem, the solution is described, and it is verified that the problem has been solved. The sample problems are in verse and the commentary is in prose associated with calculations. The problems involve arithmetic, algebra and geometry, including mensuration.
Another class of eye music is when the score is purposely made difficult for the performer. [1] For example, in Benedetto Marcello's cantata Stravaganze d’amore, the continuo part is written entirely in enharmonic chords, that is, "puns" of chord indications spelled with no regard to the key of the rest of the ensemble, but (in equal temperament) indistinguishable audibly from those spelled ...
Clar's rule is widely applied in the fields of chemistry and materials science. For instance, Clar's rule can be used to predict several properties of graphene nanoribbons . [ 10 ] Aromatic π-sextets play an important part in the determination of the ground state of open shell biradical -type structures., [ 4 ] Clar's rule can rationalize the ...