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.
D sharp minor
G-sharp minor (generally) has five sharps, however in the melodic minor both E and F♯ need to be raised, so the key signature for G-sharp melodic minor has 5 sharps and 1 double sharp (G♯, A♯, C♯, D♯, E♯, and an Fx).
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!
D flat minor exists only in theory and not in practice, it's key signature would have six flats (Eb, Ab, Db, Gb Cb and Fb) and one double-flat (Bbb). It's notation can be expressed by the far simpler key of C-sharp minor - with only 4 sharps.
The song was originally composed and recorded in the key of D Minor.
D major has a key signature of F sharp and C sharp D minor has a key signature of B flat
Only "B flat" is the key signature, then "C sharp" is the accidental.
Four key signatures have G sharp and E sharp in them: F sharp Major, D sharp minor, C sharp Major and A sharp minor.
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 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.
A minor (no sharps/flats)The flat keys with the note D as a natural are:D minorG minorC minorF minor (melodic minor, but not included in the key signature), as is is Db.The sharp keys with D as a natural are:E minorB minor (relative minor to B major)F sharp minor
TO FIND THE KEY FROM THE KEY SIGNATUREIf the key signature has sharps:The major key is the note above the last sharp in the key signature.The minor key is the note below the last sharp in the key signature.Ex: key signature with sharps f-c-g is A major or F-sharp majorIf the key signature has flats:The major key is the note of the next to last flat in the key signature. If there is only one flat, it is F major.The minor key is the note TWO notes above the last flat in the key signature.Ex: key signature with the flats b-e-a-d-g is D-flat major or B-flat minorIf the key signature has no flats or sharps:The major key is C.The minor key is A.TO CREATE THE KEY SIGNATURE FROM THE KEYThe sharps always go in this order: F-C-G-D-A-E-B-C (circle of fifths)If you are creating the key signature for a major key, keep writing sharps until the last sharp is the note below the key you need.If you are creating the key signature for a minor key, keep writing sharps until the last sharp is the note above the key you need.Ex: The key signature for B major and G-sharp minor is f-c-g-d-a.The flats always go in this order: B-E-A-D-G-C-F (circle of fourths)If you are creating the key signature for a major key, keep writing flats until the next-to-last flat is the key you need.If you are creating the key signature for a minor key, keep writing flats until the last flat is TWO notes below the key you need.Ex: The key signature for E-flat major and C minor is b-e-a.The key signature for C major and A minor has no flats or sharps.The key signature for F major and d minor has ONE flat (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.
D sharp minor
B-minor has no flats in it's natural key signature (of course, accidentals can always be added to alter a melody without altering the key signature). The key of b-minor (relative minor of D-major) has two sharps in its key signature; F-sharp(#) and C-sharp(#). If you wanted to play a b-natural-minor scale, you would play; B-C#-D-E-F#-G-A-B For a b-harmonic-minor; B-C#-D-E-F#-G-A#-B For a b-melodic-minor; B-C#-D-E-F#-G#-A#-B-A(natural, remove the sharp)-G(natural, remove the sharp)-F#-E-D-C#-B I hope this helps.
G-sharp minor (generally) has five sharps, however in the melodic minor both E and F♯ need to be raised, so the key signature for G-sharp melodic minor has 5 sharps and 1 double sharp (G♯, A♯, C♯, D♯, E♯, and an Fx).
B minor. It is called the "relative minor" of D major because in essence they are the same scales however they have different root notes. B minor/D major are the "same" as C# locrian, or E dorian, or F# Phrygian etc.