Undertone Series

The harmonic series of a sound consists of multiples of the fundamental frequency or overtones, which leads directly to the concepts of dominant and major chord. By using an analogy, a supposed undertone series has sometimes been used in order to introduce the concepts of subdominant and minor chord. This series is unreal and leads to contradictions; therefore, it is not valid. However, in some cases it can give correct results. Nuño Fernández, L. (2019). Undertone Series. http://hdl.handle.net/10251/122741