Some Metrical Rhythms (Supplementary Examples)

Definition: Traditional metric rhythms that do not follow Messiaen's systematic innovations, demonstrating that his compositional practice includes both his theoretical system and more conventional procedures.

Messiaen's Treatment: In appendix to the rhythm chapters, Messiaen provides supplementary examples that "do not at all obey the laws of my rhythmic system." Examples A–G demonstrate:

• Impressionistic character (A, B, C, D): Short tied to long (at the cross in Example C) creates Debussy-like essence contrasting with Stravinsky-like sonorities elsewhere
• Bird style (E, F): References Chapter IX on bird song
• Resonance effects (G): References Chapter XIV, Article 4
• Inexact augmentations (X, Y, Z): Allied to rhythmic variants of a Jolivet pattern, Y being inexact augmentation of X, Z being inexact augmentation of Y (Chapter IV, Article 4)

This section reveals important aspects of Messiaen's compositional practice:

1. Eclecticism: His actual compositions employ both systematic innovations and traditional procedures
2. Stylistic references: Debussy-like and Stravinsky-like passages coexist with his own innovations
3. Pragmatic flexibility: The theoretical system does not constrain all compositional choices

Modern Context: This acknowledgment is theoretically significant. Many composers' treatises present systematic theories as if they govern all compositional activity. Messiaen's candor—admitting that some music does not follow his system—demonstrates intellectual honesty and compositional flexibility.

This reflects a mature understanding of the relationship between theory and practice:

• Theory as toolkit: Systematic innovations provide resources, not constraints
• Style as synthesis: Personal voice emerges from combining systematic procedures, historical references, and intuitive choices
• Compositional freedom: No obligation to systematize all musical decisions

The references to Debussy, Stravinsky, and Jolivet (a contemporary French composer) also position Messiaen within a lineage—acknowledging influences and connections rather than claiming absolute originality.

Examples: Supplementary Examples A–G demonstrate non-systematic rhythmic writing.