December 2020 Assignment
If you think of your songs as musical paintings, diminished chords can produce the nuances between the reds and the purples, or suggest the time of day through specific shades of gray.
Usually used as a step in a progression — walking up or down between chords — a diminished chord is simply a chord with two minor thirds above the root. For example, a C major includes notes C (the root), E (the third), and G (the fifth). A diminished C triad includes the notes C, Eb, and Gb.
To put that in sounds that everyone understands, among the links below find the use of diminished chords in The Beatles “Yesterday” and “Michelle.”