piano scale
B harmonic major
B1C♯2D♯3E4F♯5G♭6A♯7
Major with a flattened sixth: the mirror of harmonic minor, and the reason a major key can borrow a minor subdominant.
Written out
Every accidental is written in, rather than left to a key signature, so the letters can be read one at a time.
The step pattern
BWC♯WD♯HEWF♯HGW+HA♯HB
What is true of it
B harmonic major is B, C♯, D♯, E, F♯, G and A♯, and back to B.
Its steps are W – W – H – W – H – W+H – H, where W is a whole step and H a half.
On the same tonic, B major differs from it by exactly one note.
Chords made only of these notes
C♯dimdiminishedC♯m7♭5half-diminished seventhD♯majorD♯mminorD♯augaugmentedD♯7dominant seventhD♯m7minor seventhEmminor
Found by testing every chord in the catalogue against these 7 sounds, not chosen.
Other scales on B
C harm majC♯ harm majD♭ harm majD harm majD♯ harm majE♭ harm majE harm majF harm majall 374