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

Personalizing your workout: Choosing numbers and tensions

A unique feature of NNS Trainer is the ability to fully personalize your study through the "Used numbers" function. This allows you to adapt the music training to your needs:

  • Basic Training: Focus on degrees 1-7 for the foundations of harmony.
  • Jazz Reharmonization: Extend the training to "tensions" (upper extensions) like 9, 11, and 13.
  • Advanced Harmony: Practice altered degrees with sharps (♯) and flats (♭), essential for blues scales or altered dominant chords.
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