Scale Library
RESERVOIR includes more than 100 scales organized by tradition and theoretical origin. Each scale includes a description of its cultural context and compositional character.Western Modes
Pentatonic & Blues
Symmetric Scales
Jazz & Extended
European Extended
Japanese Scales
Indian Ragas
East Asian (Other)
Southeast Asian — Gamelan
West Asian — Maqam, Makam, Dastgah
Maqam, Makam, and Dastgah scales with fractional intervals use the microtonal pitch system; integer-only variants exist as 12-TET approximations.
East African
Synthetic
RESERVOIR includes a substantial bank of synthetic scales drawn from the mid-20th-century jazz-modal tradition — systematic constructions built from triads, quartal stacks, diminished cycles, major-seventh intervals, and hexadic mutations of the supra-diatonic system.Mono-Quality Triads (8 scales)
Five-, six-, and seven-note scales constructed from consecutive triads of a single quality (major, minor, diminished, augmented) stacked in various cycles.Quartal Formations (8 scales)
Scales built from perfect and augmented fourth intervals — Quartal, Quartal Triads, Quartal with Neighbors, Mixed Quartal Augmented, Quartal Diminished, Quartal Nine Tone, Inverted Quartal, and Quartal Upper Neighbors.Diminished Variations (6 scales)
Scales derived from diminished structures with chromatic interjections and subscriptions.Major 7th Interval Variations (8 scales)
Scales exploring major-7th intervals with varying numbers of subscripted and superscripted tones.Consecutive Major Sevenths (5 scales)
Scales from stacked major-7th intervals with chromatic additions.Hetero and Bi-Quality Triads (5 scales)
Scales combining triads of different qualities — major with quartal, quartal with minor, diminished with quartal, augmented with quartal, and bi-quality (major+minor) tetrachords.Tertian Patterns (4 scales)
Stacked-third constructions — Tertian Chord, Tertian Patterns, Interpolated Tertian, Tertian Etude.Mutated Hexadic Scales (8 scales)
Six-note scales from mutations of the supra-diatonic system.Intervallic Hexadic (4 scales)
Six-note scales generated through intervallic mutation procedures.Compact Hybrids (3 scales)
- Phrygian-Suspended Pentatonic (0 1 5 7 10)
- Blues-Locrian Hexatonic (0 3 5 6 10 11)
- Compact Tetratonic (0 2 5 6)
Other Synthetic
- Morphic (0 1 3 7 8 10 11) — synthetic heptatonic with chromatic clusters
- Infra-Diatonic (0 1 3 4 6 8 10) — Greek enharmonic genus in 12-TET
- Greek Pentatonic, Archaic (0 1 4 5 7) — Phrygian-flavored pentatonic
Microtonal — Just Intonation
Microtonal — Historical Temperaments
Custom Scale
Set thecustomPitchClasses parameter (0–4095) to define any combination of the 12 pitch classes. Each bit represents a pitch class: bit 0 = C, bit 1 = C#, …, bit 11 = B. For example, 2741 (binary: 101010110101) = C Major.