Chord Progression Maker
Design professional harmonic sequences. Explore keys, analyze scale degrees, and hear your music come to life with our real-time sequencer.
Music Theory Mastery
Diatonic Chords
Every scale contains seven notes. We build diatonic chords by stacking thirds on each note. Major keys follow the pattern: Major, minor, minor, Major, Major, minor, diminished. Use our tool to automatically calculate these relationships for any key.
Roman Numerals
Musicians use Roman Numerals to describe chord functions regardless of the key. Uppercase (I, IV, V) represents Major chords. Lowercase (ii, iii, vi) represents minor chords. This system allows you to transpose progressions effortlessly.
Common Progressions
Most popular music relies on established patterns. The I-V-vi-IV progression dominates pop music. The ii-V-I is the foundation of Jazz. Experiment with these sequences in our maker to find your signature sound.