The dominant and subdominant anon are more stable than the submediant and the supertonic. The first rondo episode utilizes an unusual, unprepared modulation to the mediant, then the supertonic. In Lydian mode, the tonic, dominant, and supertonic triads are all major. This triad is consequently called the "supertonic diminished triad". The triad built on the supertonic note is called the supertonic chord. The supertonic chord lies a fifth above the V chord. The term "supertonic" may also refer to a relationship of musical keys.