c flat.
the semitone above b flat is b, with is equal to c flat. So the diatonic semitone is c flat because it has to be a different note name.
It would be G becasue semitones are 1 note apart where Tone's are 2 notes apart
One semitone above E sharp is F sharp (E sharp is the same as F natural).
E-flat
C-sharp to D, or C to D-flat would be a semitone.
C sharp/D flat
B
It would be a sharp/flat. Like A would be A#/Bb
F major is F - G - A - B flat - C - D - E the A and B flat are a semitone apart. (3rd and 4th) the E and F are a semitone apart (7th and 8th (1st)) It is the same in all major scales (3-4 and 7-8 are always a semitone apart)
A C flat
B Double Flat
C sharp
B
A diatonic semitone is usually represented by the adjacent letter names. The next higher letter pitch to C is D. The answer is D (natural).
C-sharp to D, or C to D-flat would be a semitone.
C sharp/D flat
B
It would be a sharp/flat. Like A would be A#/Bb
F major is F - G - A - B flat - C - D - E the A and B flat are a semitone apart. (3rd and 4th) the E and F are a semitone apart (7th and 8th (1st)) It is the same in all major scales (3-4 and 7-8 are always a semitone apart)
We all know in the notes of a piano, the white note before two consecutive black keys is C. If we play a series of 8 white notes up to the next C, we will have played the 'diatonic' scale of C major, and we play 1-3-5 together to play a C major chord. The next white note up from C is D. All major (diatonic) scales follow the formula of intervals: root note, full tone, full tone, semitone, full tone, full tone, full tone, semitone. To follow this pattern for D major, requires the F note to be sharpened by a semitone to the first black key of the group of 3 and the C to be sharpened by a semitone to the first black note of the group of two. The Key Signature (top left of a sheet of music) identifies the starting key of the piece by a series of sharps (#), when a natural (white) key is raised by a semitone, or flats (b) when a natural is lowered by a semitone. The key signature for D Major is (##), two sharps.
"Flat" means to go down one semitone. Look at a piano (or similar) keyboard, and check what you have one to the left of "C". Since on a piano there is no black key between "B" and "C", the next semitone down from "C" is simply "B".