Understanding the Mediant Chord in Music Theory
In music theory, a mediant is a chord that is built on the third scale degree of a key or progression. It is typically found in the second degree of a key, and serves as a pivot point between the tonic (first degree) and the subdominant (fourth degree).
For example, in the key of C major, the mediant chord would be E minor (Em), because it is built on the third scale degree of the key (E). The mediant chord often functions as a "turning point" in a progression, creating tension that is later resolved by returning to the tonic chord.
In pop music, the mediant chord is often used to add variety and interest to a progression, and can be found in many different styles of music. For example, the mediant chord is used extensively in the verses of "Sweet Child O' Mine" by Guns N' Roses, adding a sense of tension and release to the progression.