If you mean in terms of relative minors, D minor is the relative minor of F major.
The relative major key of B minor is D major. It has a key signature of F# and C# and a raised 7th of A#.
D minor - which is claimed to be the saddest key.
The chords in the key of D minor are D minor, E diminished, F major, G minor, A minor, Bb major, and C major.
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
D minor.
Major Key: F Major Minor Key: D Minor
The major relative minor is the minor key that shares the same key signature as a major key. It is related to the major key because they have the same notes, but the relative minor starts on a different note within the key.
The D in a D Minor quartet means that the piece was written around a D Minor scale, and that it is in the key of D Minor. Musically speaking, the key signature would have one flat.
It is in the key of d minor (1 flat-b).
F# minor is the enharmonic equivalent of G♭ minor, which is the subdominant key of D♭ minor. D♭ minor is a theoretical key with a troublesome B double-flat in its key signature. This is why you would usually see the key orientation of a song or passage with tonal center of D♭ notated around its enharmonic equivalent, C#.
The relative major key of B minor is D major.