The supertonic in C major is the note D, which is the second degree of the C major scale (C-D-E-F-G-A-B). In terms of chords, the supertonic chord is built on this note, typically forming a minor chord (D minor, consisting of the notes D, F, and A). The supertonic plays a crucial role in harmonic progressions, often leading to the dominant chord (G major) in classical and popular music.
The supertonic of A major is B minor. In the context of the A major scale, which consists of the notes A, B, C#, D, E, F#, and G#, the supertonic is the second degree of the scale, which is B. B minor serves as the ii chord in the A major key, often used in harmonic progressions.
E
The key that includes both F sharp and C sharp is the key of D major.
G#
In the key of D major, the notes that are sharp are F, C, and G.
The supertonic of any scale is the second degree of the scale. Therefore, the supertonic of C major is D.
The supertonic triad in the key of A flat major is B flat, D flat, and F natural
That would be C-sharp major. Every note is sharp.
E
G
If C is the tonic, D is the supertonic.
C# major, E major, A major, B major, and C# minor.
A major has three sharps: F, C, and G.F sharp, C sharp, G sharp
B flat
G
C# Major
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.