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

Choose study mode:

Notation system:

Keys to practice:

The NNS Trainer app is a complete tool for practicing the Nashville Number System, scale degrees, and Jianpu. It's 100% free, ad-free, and requires no login. If you enjoy using it, you can say "thank you" with a coffee ☕. Donations cover server costs, keeping it online and free! Happy studying! https://ko-fi.com/nnstrainer

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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