A chord progression is a sequence of chords in a specific order based on a scale or mode. There are many different scales you can find, and we have seven different modes. Two of the most popular ones are Ionian (or natural major) and Aeolian (or natural minor). The other five are Dorian, Phrygian, Lydian, Mixolydian, and Locrian. Most commonly
The Minor 7th Chord. Name: Minor seven chord, minor seventh chord Formula: 1-♭3-5-♭7 Chord Symbol: Cm7, C-7. Building a minor 7th chord is the same principle as building a major 7th chord. You just take a minor triad and then add the 7th note of the minor scale. You can also think of this as taking a minor triad and adding a minor 7th interval.