Diminished chords are considered to be dissonant chords, and are often used to create a sense of tension or unease. They are often used in jazz, blues, and rock music.
The diminished chord is one of the most important chords in jazz harmony. It is used in a variety of contexts, including as a substitute for the dominant seventh chord, as a passing chord, and as a target chord for chromatic mediants.
The diminished chord is also used in classical music. It is often found in the music of composers such as Mozart, Beethoven, and Brahms.
Diminished chords are also used in contemporary music. They are often found in the music of artists such as Radiohead, Coldplay, and Björk.