A comprehensive music theory toolkit for composers, arrangers, musicians, and producers. Explore scales, chords, Neo-Riemannian voice leading, build progressions, and connect with other music makers through Collabo — a live browser-based collaboration room with video chat, audio chat, turn-based track building, MIDI export, and WAV export.
Collabo gives music producers a fast way to meet, talk, and create without leaving the browser. Use built-in video and audio chat to swap ideas, take turns arranging drums and melodies, build a shared loop in real time, then export the finished collaboration as MIDI or WAV for your DAW.
Built for beatmakers, composers, and remote collaborators who want quick creative sessions: discover new producers, sketch musical ideas together, communicate face-to-face, and bring the exported files back into Ableton, Logic, FL Studio, Reaper, or any MIDI/WAV-friendly setup.
Major, natural minor, all seven modes, diatonic chord functions and Roman numeral analysis.
Melodic minor, harmonic minor, Lydian dominant, Super Locrian/Altered, all bebop scales, diminished.
Hungarian minor, Byzantine, Phrygian dominant, Persian, Hirajoshi, In, Iwato, Egyptian, Neapolitan.
Whole tone, diminished HW & WH, augmented hexatonic, tritone scale, Prometheus/Mystic scale.
P, R, L, N, S, H triadic transformations. Hexatonic cycles. Tonnetz geometry. Cube Dance.
Tritone sub, backdoor dominant, diatonic substitution, secondary dominants, chromatic mediants.
Interactive fretboard with 8 tunings, custom tuning, capo. Chord voicings and inversions.
Export progressions to MIDI, PDF chord charts with slash notation, and lead sheets with tab.
| Scale | Category | Formula | Character |
|---|---|---|---|
| Major (Ionian) | Diatonic | 1 2 3 4 5 6 7 | Bright, stable — the foundation of Western harmony |
| Dorian | Modes | 1 2 b3 4 5 6 b7 | Minor but hopeful — jazz, blues, funk staple |
| Lydian Dominant | Jazz | 1 2 3 #4 5 6 b7 | Floating, sophisticated — unresolved dominant 7ths |
| Super Locrian (Altered) | Jazz | 1 b2 #2 3 b5 b6 b7 | Maximum tension — every note altered, Parker hallmark |
| Phrygian Dominant | World | 1 b2 3 4 5 b6 b7 | Flamenco, Middle Eastern, dramatic |
| Hungarian Minor | World | 1 2 b3 #4 5 b6 7 | Eastern European character — two augmented 2nds |
| Hirajoshi | World | 1 2 b3 5 b6 | Japanese koto — serene, meditative pentatonic |
| Whole Tone | Symmetrical | 1 2 3 #4 #5 b7 | All augmented chords, no tonal gravity |
| Bebop Dominant | Bebop | 1 2 3 4 5 6 b7 7 | Chord tones on downbeats — the bebop language |
| Prometheus (Mystic) | Hexatonic | 1 2 3 #4 6 b7 | Scriabin's Mystic Scale — hauntingly unresolved |