NNS Trainer (Nashville Number System, Musical Scale Degrees, Jianpu)

Choose study mode:

Notation system:

Keys to practice:

How to practice efficiently with NNS Trainer?

For the best results, we recommend short, daily training sessions of 5 to 10 minutes. Systematic study and regular music practice build mental muscle memory, which translates into fluency during live performances and reharmonization.

Keyboard Shortcuts (PC and Laptop):

  • Letter keys (Notes): Press A-G. An excellent keyboard orientation exercise.
  • Shift + [Letter]: Raises the note by a half-step (Sharp ♯).
  • Spacebar (hold) + [Letter]: Lowers the note by a half-step (Flat ♭).
  • Keys 1 - 7: Fast scale degree training by selecting the number.
  • "?" key: A hint that speeds up the learning process.
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