Property:Musica Has definition
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This property stores the definition of a music theory concept. Text
R
A measure of the density of notes within a given beat, quantifying the demand on a musician's precision and agility. It is calculated as a function of notes per beat, where a low number of notes (e.g., a whole note) has a complexity of 0, and a high number of notes (e.g., 32nd notes) has a complexity approaching 1. +
D
A measure of the difficulty of playing at a volume that deviates from an instrument's natural, median dynamic (''mezzo-forte''). The cost is modeled as a U-shaped curve where playing at the softest (''ppp'') and loudest (''fff'') extremes incurs the highest load (approaching 1), while playing at a moderate volume incurs the lowest load (approaching 0). +
R
A measure of the physical difficulty of playing a note at the outer limits of an instrument's practical pitch range. The cost is modeled as a parabolic curve where notes in the center of the range have the lowest load (approaching 0) and notes at the highest and lowest extremes have the highest load (approaching 1). +
E
A real-time measure of tuning and rhythmic inaccuracies, representing internal Drag. +
T
A scalar value representing the physical difficulty and rarity of a given instrumental technique. Standard articulations (e.g., ''arco'', ''legato'') have a low complexity (approaching 0), while extended techniques (e.g., ''col legno'', multiphonics, flutter-tonguing) have a high complexity (approaching 1). The value is determined by a pre-calibrated lookup table specific to each instrument. +
Test value +
Test-value +
F
The Frequency Load (L\_f) measures the difficulty of a note's pitch. It's higher for notes at the extreme ends of an instrument's range or notes that are harmonically dissonant with the ensemble. +
M
The Musica Maneuverability (MM) Score is a real-time, composite index from 0 to 100 that measures the collective sonic energy and performance capacity of an orchestra. It treats the entire ensemble as a single dynamic vessel, quantifying its ability to virtuously execute musical ideas.
In the language of Energy-Maneuverability Theory, the MM Score represents the orchestra's immediate Specific Excess Power (P_s). A high score indicates the ensemble is in a state of high energy—cohesive, in tune, and playing with a reserve of dynamic power. A low score indicates the orchestra is "bleeding energy" through dissonance, fatigue, or excessive complexity. Orchestral Score Calculation
The MM Score is calculated by balancing the orchestra's power output against its internal and external drags, normalized by its size. +
A
The intrinsic difficulty of the current musical passage (e.g., harmonic and rhythmic complexity), representing external Drag. +
S
The metabolic and physical cost of holding a single note for an extended period. It is calculated as the ratio of a note's duration in seconds to the maximum practical sustain time for a given instrument (e.g., a single bow length for a violin or a full breath for a flute). +
T
The number of performers in the ensemble, representing its Mass or inertia. +
H
The psychoacoustic "cost" of a single note relative to the currently established harmony. The value is determined by the interval relationship between the note and the root of the active chord. Consonant intervals (e.g., octave, fifth, third) have a low dissonance value (approaching 0), while dissonant intervals (e.g., minor second, tritone) have a high value (approaching 1). +
T
The speed of the music in beats per minute, representing the vessel's Velocity. +
A
The total potential dynamic energy of the ensemble, representing its Thrust. This is a function of the number of musicians playing and their remaining physical stamina. +
S
a Scaling Constant to normalize the score to a 0-100 range. +
N
determines if a specific musician playing a specific note at a specific moment is a "virtuous" action. It is calculated by comparing the orchestra's available capacity (the MM Score) to the holistic cost of playing that single note (the Total Note Load). +
T
is the weighted sum of four individual load calculations based on the fundamental variables of music. +
F
measures the difficulty of a note's pitch. It's higher for notes at the extreme ends of an instrument's range or notes that are harmonically dissonant with the ensemble. +
D
measures the difficulty of a note's rhythm and length. It penalizes both rhythmically complex, rapid passages and extremely long, sustained notes that demand significant breath or bow control. +