The supertonic of any scale is the second degree of the scale. Therefore, the supertonic of C major is D.
G
G
The leading tone is the seventh note in the scale. For D-flat major, this would be C.
There are two tetrachords in a diatonic scale. The second tetrachord has the higher four notes. In D major, they are A B C# and D.
The interval from the tonic note to the third note of a major scale is a major third.
G
The supertonic triad in the key of A flat major is B flat, D flat, and F natural
F is the tonic. Therefore, from supertonic (the second note) to supertonic is G, A flat, B flat, C, D flat, E natural (a harmonic minor scale has the 7th note raised), F, G.
In the perspective of European-descendent theory, the degrees of any key or scale (major, minor, or modal) can be classified as follows: 1 - Tonic 2 - Supertonic 3 - Mediant 4 - Subdominant 5 - Dominant 6 - Submediant 7 - Leading Tone Let us take the case of C major as our key/scale: C - Tonic D - Supertonic E - Mediant F - Subdominant G - Dominant A - Submediant B - Leading Tone Similarily, this works in the minor keys, too. Using A natural harmonic as our key/scale: A - Tonic B - Supertonic C - Mediant D - Subdominant E - Dominant F - Submediant G - Leading Tone
C major is a major scale starting from C.
G
E
In ascending order, the names for each scale degree are the tonic, supertonic, mediant, subdominant, dominant, submediant, leading tone, and the tonic again.
If C is the tonic, D is the supertonic.
B flat
The C major scale is: C, D, E, F, G, A, B, C.
The C major scale is: C, D, E, F, G, A, B, C.