well the minor scale was unfortunait used to be b flat then it was changed to e flat.
Assuming the key signature has only one flat (B Flat) then the key is either F Major, or D minor.
The key signature for D sharp minor would be the one for F sharp major: FCGDAE. You can also think of it as E flat minorwhich is related to g flat major in which the key signature would be BEADGC.
F# minor, which has 3 sharps in the key signature.
The key signature for D Minor is 1 flat. Here is the difference between D major and D minor: D Major: D E F# G A B C# D D Minor: D E F G A Bflat C D However, there are 3 commonly used forms of Minor Scales. The above is called the "natural minor", or Aeolian Mode. In the harmonic minor scale, the 7th note is raised one semitone, to C#. However, this added sharp does not appear in the key signature. In the melodic minor scale, the 6th and 7th notes are raised in ascending, to B and C#, but restored to the natural minor form in descending. However, these changes do not appear in the key signature. In the D minor pentatonic scale, used frequently in Rock, only the following notes are used: D - F G A - C D This form can be notated with or without a key signature, but a key signature of one flat (Bb) lets us know that D is the tonic!
A minor has no key signature.
The key signature with one flat is either F major or D minor.
the key signature of the e minor scale has e flat f Sharpe (and i think it has b flat.)
D major has a key signature of F sharp and C sharp D minor has a key signature of B flat
D minor - more specifically, D harmonic minor (the version of the minor scale with a flat 6 and a sharp 7). However, you will never see a key signature with a B flat and a C sharp. The key signature will only contain B flat.
There is not three notes in any scale or key, if you are asking about the accidentals, there is one flat (Bb) in the key signature plus an additional C sharp for the harmonic minor scale.
Relative major and minor share the same key signature but a different tonic note (a tonic note is the first note of the scale or in solfege tonic is DO). For example, D flat major has five flats in it's key signature and b flat minor has 5 flats in it's key signature; therefore, D flat major and b flat minor are relative.
That is the signature for the key of Db. Or, it's relative minor, Bb minor.
There is no key signature for D harmonic minor in particular - as the raised seventh is not part of the key signature. In all clefs, D minor has one flat and in all cases (since the raised seventh in this scale is C♯), to avoid confusion it is best to avoid having both a sharp and a flat in the same key signature.
That is C Minor
A Dorian key signature is an earlier style of key signature used on pieces in minor keys. A good example is J.S. Bach's Toccata and Fugue in D Minor, BWV 538, that was notated with a key signature of zero flats rather than the one flat of a contemporary key signature notation for D Minor. The Dorian mode is a mode of the major scale built off of the second scale degree of a major scale and, therefore, a Dorian key signature for D Minor would be the signature for the major scale a whole step below: C Major...therefore zero flats. The D Dorian scale is spelled D, E, F, G, A, B, C and therefore shares the same key signature as C Major in this older notational system. It is now customary within the western tonal system to relate minor keys to the key signature of the major key found a minor third above. D Minor is now written with one flat, the key signature of F Major. Today the "natural minor" scale or Aeolian mode (the mode built off the 6th scale degree of major) is the common reference point for a minor key's key signature.
The key signature for F major has one flat (B flat) , while the key signature for F minor has four flats (B flat, E flat, A flat, and D flat).
F major because it only has B flat in its scale.