In the context of [[tonal harmony]], major and minor thirds and sixths comprise one of two categories of consonant intervals known as *imperfect consonances*—the other being [[perfect consonances]]. Compared to perfect consonances, imperfect consonances have historically been treated more freely, with fewer proscriptions regarding [[forbidden motions]]. **Example 1.** Imperfect consonances. ![[example imperfect consonances.png]]