Wiktionary
n. 1 (context music English) a minor key with the notes B, C♯, D, E, F♯, G, A 2 (context music English) the minor chord with a root of B
Wikipedia
B minor is a minor scale consisting of the pitches B, C, D, E, F, G, and A. Its key signature consists of two sharps. The harmonic minor raises the note A to A. Changes needed for the melodic and harmonic versions of the scale are written with accidentals as necessary.
Its relative major is D major, and its parallel major is B major.
Christian Friedrich Daniel Schubart (1739–1791) regarded B minor as a key expressing a quiet acceptance of fate and very gentle complaint, something commentators find to be in line with Bach's use of the key in his St John Passion. By the end of the Baroque era, however, conventional academic views of B minor had shifted: Composer-theorist Francesco Galeazzi (1758–1819) opined that B minor was not suitable for music in good taste. Beethoven labelled a B minor melodic idea in one of his sketchbooks as a "black key". Brahms, Dvořák, Schubert, Liszt, Chopin, Borodin, and Tchaikovsky all wrote significant works in B minor.
Usage examples of "b minor".
I sat in the crematorium, listening to my Uncle Hamish quietly snoring in harmony to Bach's Mass in B Minor, and I reflected that it always seemed to be death that drew me back to Gallanach.