The *supertonic triad* is the triad built on scale degree $\hat{2}$, forming a [[major triad]] in the [[major scale|major]] mode and a [[diminished triad]] in the [[minor scales|minor]] mode. It typically functions as a [[predominant harmony]], often replacing or following the [[subdominant triad]] within the [[phrase model]]. **Example 1.** Supertonic triad in major. ![[example supertonic triad in major.png]] **Example 2.** Supertonic triad in minor. ![[example supertonic triad in minor.png]]