| (1) | the score unambiguously specifies the invariant properties of the musical work that must be present in every performance of that work,8 and |
| (2) | given a proper performance of the work, it is possible to recover or rewrite its score. |
Figure 1
Two musical staves with different typography of Twinkle, Twinkle, Little Star.
Figure 2
Three inscriptions of the quarter note character.
Table 1
Notational scheme of Twinkle, Twinkle, Little Star.
| CHARACTER | MARK |
|---|---|
| Treble clef |  |
| Two–four time signature |  |
| Half note |  |
| Quarter note |  |
| Eighth note |  |
| Sixteenth note |  |
| Bar line |  |
| Staff |  |
| Dot |  |
| Double bar line |  |
Figure 3
Character A in SML.
| (1) | Although a kind of notation may serve various functions, it is defined solely by its principal function. |
| (2) | Nothing in the configuration of a notation determines which kind of notation it belongs to. |
| (3) | If two notations share the same principal function, they belong to the same kind of notation. |
Figure 4
Beginning of the second movement of Ludwig van Beethoven’s Kreutzer Sonata. Violin part.
Figure 5
Excerpt from the Codex Buranus.
Figure 6
December 1952 by Earle Brown. Copyright © 1961 by Associated Music Publishers, Inc. (BMI). International Copyright Secured. All Rights Reserved. Used by permission.
| (1) | The score unambiguously specifies the invariant properties of the musical work that must be present in every performance of that work. |
| (1*) | The score unambiguously specifies the actions that a performer must carry out in order to perform the musical work. |
| (2) | Given a proper performance of the work, it is possible to recover or rewrite its score. |
| (2*) | Given a performance of a work, the possibility of recovering or rewriting its score serves as an indicator of the degree to which it complies with the composer’s original instructions.30 |
| (1) | All elements that make up the score – namely, those denoting the invariant properties of the work – must be notational. |
| (2) | Not all notational elements necessarily denote invariant properties of the musical work. |