There are two sharps in b natural minor: F# and C#
The sixth and seventh degrees are raised a half-step when going up (notice that sometimes when raising a note you'll end up on another white key), like the C-sharp melodic minor scale - where you need to raise B, but most of the time you just play the black key to the right on the way up, and revert to the natural notes on the way down.
Dominant triads, which are built on the fifth (or dominant) note of the scale, are (almost) always major - even when written in a minor key. This is because the middle note (which is the 7th note of the scale - known as the leading note) is always raised by a chromatic semitone.For example:The C major dominant triad is composed of the notes G, B, and D.The a minor dominant triad is composed of the notes E, G#, and B. Although there are no accidentals in the key signature of this scale, the 7th note is raised from G-natural to G# in order to make it a harmonic scale.That's not to say that minor dominant triads don't exist, because they do. They're just rare. You might be able to find a minor dominant triad in a situation where the dominant triad is played in conjunction with a descending melodic line (i.e. where the 6th and 7th notes of the scale aren't raised).
Natural minor scales do not have raised 7ths as in harmonic minor scales. They don't have raised 6th in ascending scales as in melodic minor scales. Hence the notes are the same for ascending and descending scales: C D Eb F G Ab Bb C.
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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.
The key signature with only a B-flat is either F major or D minor.
D major and B minor.
C# major A# minor
Assuming the key signature has only one flat (B Flat) then the key is either F Major, or D minor.
Only "B flat" is the key signature, then "C sharp" is the accidental.
That is C Minor
D major has a key signature of F sharp and C sharp D minor has a key signature of B flat
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
That is the signature for the key of Db. Or, it's relative minor, Bb minor.
F# minor, which has 3 sharps in the key signature.
The naturals simply indicate that the five notes that were previously sharp, are no longer sharp. The key will be C Major, or a minor.