What is this tool?

A step-by-step chord progression builder. Pick a key, choose your first chord, and the tool suggests musically natural next chords based on music theory. Emotion filters let you narrow the suggestions to fit the mood you want — bright, melancholic, tense, and more.

When it helps

• Create an original progression

  When you want to build a progression from scratch. You only pick from suggested candidates, so you can make something musical without deep theory knowledge.

• Extend a standard progression

  Start with high-star (standard) transitions, then mix in a 1-star adventurous option to give your progression character.

• Nail a specific mood

  Filter by Bright, Melancholic, Sophisticated, etc., and only suggestions matching that feel will appear.

How to use

1. 1 Pick a key and major/minor from the top bar.
2. 2 Use the emotion filter button to narrow suggestions by mood ("All" shows everything).
3. 3 Tap "Preview" on a candidate card to hear the chord, then "+ Add" to append it.
4. 4 Each added chord has 1/2/4 buttons to set its beat length. Use × to remove a chord.
5. 5 Tap "▶ Play progression" in the dock. Open the settings sheet to adjust BPM and toggle loop.

Related Tools

Lessons that use this tool

The sections of the systematic curriculum where this actually comes up.

• Harmonic Function and Cadences Harmonic Rhythm - How Fast the Chords Change
• Harmonic Function and Cadences Connecting Chords - Root Motion and Common Tones

Learning courses that include this topic

Following the course in order gives you a structured foundation.

Related Articles

• Building Chord Progressions — An Emotion-Based Beginner Guide
• Dominant Motion (V→I): The Engine of Chord Progressions