practice.thiri.ai
Free tools that actually reason about harmony.
Every musical decision is the engine's, not a guess. Try one free.
Validator
Voice Cop
Paste a progression, pick a style. Checks whether the voice leading actually stays smooth — and shows the engine's better voicing when it doesn't.
Studio
Why It Works
Reharmonize a progression, then A/B the original against the engine's substitution — with the engine's own explanation of why it pulls.
Trainer
Ear Bridge
Hear a chord, name its quality or function, then check against the engine. Close the knowing-vs-hearing gap, one chord at a time.