The $\mathrm{V^7}$ chord is a [[dominant seventh chord]] built on scale degree $\hat{5}$ in a [[major scale|major]] or [[minor scales|minor]] key and typically functions as [[dominant harmony]]. In minor keys, a seventh chord built on scale degree $\hat{5}$ using unraised $\hat{7}$ yields the [[minor seventh chord]] $\mathrm{v^7}$; therefore, scale degree $\hat{7}$ must be raised to produce a $\mathrm{V^7}$. - [[strict resolution of the V7]]