What is super tonic triad?

A supertonic triad is a musical chord that is built by playing the 2nd, 4th, and 6th notes of a major scale. For example, in the key of C major, the supertonic triad is D-F-A.

Supertonic triads can be used to add tension or interest to a piece of music. They can also be used to prepare the listener for a modulation or key change.

When a supertonic triad is used, it is often followed by a dominant seventh chord. This is because the dominant seventh chord resloves to the tonic, which creates a sense of closure.