F# and C# (Same as D major)
The key signature of the song "Hotel California" is B minor.
The key signature of the C minor scale has three flats: B flat, E flat, and A flat.
Assuming the key signature has only one flat (B Flat) then the key is either F Major, or D minor.
A minor has no key signature.
F# minor, which has 3 sharps in the key signature.
There are two sharps in b natural minor: F# and C#
The key signature with only a B-flat is either F major or D minor.
The key signature of the song "Hotel California" is B minor.
D major and B minor.
C# major A# minor
The key signature of the C minor scale has three flats: B flat, E flat, and A flat.
Assuming the key signature has only one flat (B Flat) then the key is either F Major, or D minor.
A minor has no key signature.
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
That is the signature for the key of Db. Or, it's relative minor, Bb minor.