👉 The term "subdominant" is used in music theory to describe a musical note that is not dominant but has a similar or greater frequency than the dominant note. This can be particularly useful when discussing harmonic scales, where a particular note is considered to be subdominant by some means of classification or analysis. For example, if we have a scale with a major third (C) and another minor third (D), we might say that the D is subdominant because it has a higher