Diminished chord topic

Generally, in music, a diminished chord is a chord which has a diminished fifth in it. More specifically, it is a triad (a diminished triad ) consisting of a minor third and diminished fifth above the root — if built on C, a diminished chord would have a C, an E and a G. The interval between the upper two notes is also a minor third — thus, the chord consists of two minor thirds stacked on top of one another. It resembles a minor triad with a lowered (or diminished) fifth. In the common... full article at wikipedia