The leading tone is the seventh note in the scale. For D-flat major, this would be C.
The whole tone scale only uses full tones, therefore there are six notes per octave. Theoretically could can start a whole tone scale on any note but there are only 2 distinct scales. Whole tone scale starting on C: C, D, E, Gb, Ab, Bb, C Whole tone scale starting on Db: Db, Eb, F, G, A, B, Db Starting a whole tone scale on any of the other notes would merely be inversions of the scales mentioned above.
The leading note of Db major is C.
The leading note of Db major is C.
The sub-dominant of Db is Gb.
The db scale refers to the decible scale (measures noise intensity).
Bb, Eb, Ab, Db, Gb, Cb
Db, Eb, Fb, Gb, Ab, Bb, C, Db, Cb, Bbb, Ab, Gb, Fb, Eb, Db.
Ab Bb C Db Eb F G Ab
Gb, Ab, B, Cb, Db and Eb.
The same way you develop any major scale. W = Whole Step H = Half Step S= Start/End Degree S - W - W - H - W - W - W - H(S) so the Db Major scale would be: Db - Eb - F - Gb - Ab - Bb - C - D
Step 1) Find the first note (the tonic) of the Major Key you want (A,B,C...)Step 2) Go up the notes as follows, where a tone is 2 notes (including sharps and flats) and where a semitone is one note (including sharps and flats)...Tone - Tone - Semitone - Tone - Tone - Tone - Semitone.Step 3) You should have arrived back at the starting note (the tonic) but 1 octave higher up. Those notes together form the scale of your selected note in Major form. The sharps/flats of the scale are the ones notated on the stave to show the Key Signature.Step 4) To find out whether to refer to the black notes as # (sharps) or b (flats), either see my list below OR look at a diagram showing the Circle Of Fifths - all the Major and Minor Keys. Major keys on the left are written using b (flats) and those on the right with # (sharps).C Major = NaturalG Major = F#D Major = F#, C#A Major = F#, C#, G#E Major = F#, C#, G#, D#B/Cb Major = F#, C#, G#, D#, A# / (Bb, Eb, Ab, Db, Gb, Cb, Fb)F#/Gb Major = F#, C#, G#, D#, A#, E# / (Bb, Eb, Ab, Db, Gb, Cb)Db/C# Major = Bb, Eb, Ab, Db, Gb / (F#, C#, G#, D#, A#, E#, B#)Ab Major = Bb, Eb, Ab, DbEb Major = Bb, Eb, AbBb Major = Bb, EbF Major = BbC Major = Natural
Gb, Ab, Bb, Cb, Db, Eb, F, Gb