Question

What is a chord progression?

Answer 1

In a musical composition, a chord progression or harmonic progression (informally chord changes, used as a plural) is a succession of chords. ... For example, the previously mentioned chord progression, in the key of C major, would be written as C major–A minor–D minor–G major in a fake book or lead sheet.

Answer 2

The capital letters are major chords, lowercase letters are minor, and the last one is diminished. So, when you talk about chord progressions, the common way to write them is I – IV – V. This means that all three chords will be major ones, and in the scale of C major, the progression is C – F – G.