Double tonic


A double tonic is a chord progression, melodic motion, or shift of level consisting of a, "regular back-and-forth motion," in melody similar to Bruno Nettl's pendulum type though it uses small intervals, most often a whole tone though may be almost a semitone to a minor third.
It is extremely common in African music, Asian music, and European music, including:
: minor third.
In American music, a rare example of a double-tonic is the spiritual "Rock my Soul" though American popular music began to use the double tonic commonly in the last half of the 1900s, including Beck's "Puttin It Down".
Double tonic patterns may be classified as beginning on the lower or upper note and may repeat open endedly, though they are often closed through a tonic close, as in :
Am|G|Am-G|Am||
They are also often varied through a binary scheme ending on the dominant then tonic, as in:
Am|G|Am|E|| Am|G|Am-G|Am||
or,
Am|G|Am|E|| Am|G|Am-E|Am||
A variation of this last progression is the passamezzo antico.